I wasn't sure which of the three I'd like best. I was intrigued by the flat, triangle shape of the Sellemer. I liked the round, compact look of the Lefree, and the Boomjoy had a nice tweezer attachment (which I can use to clean out hairs in my shower drain). Also, Boomjoy was the cheapest of all three.So you can see in my photo the type of packaging they come in. The Sellemer and Lefree both also come with a little plastic piece that you can stick to your wall and hang the brush on your wall. Not really sure I care to do that, though.I also placed all the brushes next to a coffee mug, so you can see approximately what the sizes are. I like the Sellemer in that it's svelte. The Lefree is also quite compact. The Boomjoy has the largest base, so it would seem to take up most space. But the size differences, as you can see, are minimal.The brushes in the Lefree and Sellemer "hang" to drain, that is when you put the brush into the holder, it's suspended and there's a ventilated bottom. The Boomjoy is a solid bottom piece and the brush rests in it, like a bowl. I suppose that can cause some water accumulation and won't dry as easily/quickly.All three required the handles to be twisted on, which were easy enough on all three. I liked the handles on the Sellemer and Lefree over the Boomjoy. The Boomjoy was the only one that had a metal part to the handle, but for some reason it felt a bit flimsy. The other two had all plastic handles.This is the first time I tried silicone brushes, and overall I like the way the clean/work over the old bristle ones.Sellemer: I thought I would like the triangular shape as it said it could get under the lip easily. But in trying all three of them out, the flat, triangular shape actually made it feel a little flimsier, so I didn't feel I could brush as hard against the toilet. I did like that there seemed to be good density on this one with the silicone bristles.Lefree: This one looked like it was most lacking in silicone bristles. They were all spaced somewhat far apart. But, it still seemed to clean fine, and I could press it up against the lip of the toilet and it got under there just fine. Just as fine as the Sellemer. I felt I could press pretty hard against the surface of the toilet, too, to scrub some of those harder water stains out.Boomjoy: This seemed to have more dense silicone bristles than the Lefree, but less than the Sellemer. It also worked much like the Lefree. I could get under the toilet lip easily and scrub pretty hard against the toilet surface.Honestly, they are all "Made in China" products, so the quality is all pretty much the same. So what you are really deciding on are small features and which style you like the best.Personally, knowing what I know now, I would buy the Lefree. While the bristles were the least dense, it seemed to clean just as well as the others. It has a small footprint with a ventilated bottom. I just didn't really care for the flimsy feel of the flat triangle Sellemer. And the Boomjoy's non-ventilated bottom bothered me a bit in that I think if water were to gather and drip when I pick it up next time, it would be gross. I do like having the tweezer, but is it really necessary? It also has the largest base. I do like its very sleek look though, and the fact that it doesn't put its brand across the base.Also, if price is of concern, the Sellemer was most expensive at around $15-$17 depending on when you buy it. I see a lot of price fluctuations. The Lefree is around $13. And the Boomjoy was $9.99.Overall, all three worked pretty well, and I think I will stick to silicone over the bristles from now on.Slim but stable. Instead of using the adhesive tape, I place it on the floor at the back of the toilet where it’s least visible. It totally goes away due to the flat shape.The aerated brush holder means I don’t have to worry about icky water standing stagnant. I also don’t have to worry about drying the brush so much before putting it away.I wasn’t sure how well the silicone brush would clean vs. bristle brushes, but I’m happy to report it hasn’t been a problem. I will add that I allow the toilet bowl cleaner to sit in the bowl for a few minutes before I use the brush, which I’m sure makes brushing easier.Also, unlike bristles, the silicone retains its shape, which means it will last longer (better for the environment).Because the brush head is screwed on, when I apply more pressure I need to make sure it’s clockwise so that I don’t accidentally loosen the brush.I think the triangular shape helps to more precisely access the area under the rim that collect mineral deposits around the water supply holes, but it took some getting used to.Overall, I love this brush.I bought one of each to compare, and while both are new, it looks like the Sellemer will be more durable. Also, I prefer to patronize original designers, and it appears that the Sellemer is the original and that the Chinese manufacturer then copied the basic features and slightly modified the design so as not to compete. While on the surface it looks like the Lefree's rounded shape is better, I'm thinking the Sellemer will be more durable. Here's why:1. The Sellemer is flat and flexible, the latter not obvious from the photos. That narrower shape allows you to get under the lip of toilets, where things build up.2. While it would seem that the round shape of the Lefree is better, in practice you have to wipe various areas of a toilet bowl, and the round tip of the Lefree is apt to wear out faster than the tapered shape of the Sellemer, which will spread the force out over a wider area.Otherwise the two models are pretty similary. The Sellemer handle is two-part, and the plastic modeling by the Chinese manufacturer is not-so-great, so the two parts don't exactly line up. The German design of the Selemer probably shows in the finer threads per inch of the Sellemer, but unfortunately the quality control on the basic molding isn't great, so the parts are not perfectly round, straight and on-center. Otherwise the diameter of the molded parts appears to be the same, as well as the density and thickness of the silicon nubs.I did not want a traditional old-fashioned toilet brush and needed something small and compact. This fit the bill. The silicone brush is easy to clean and is very flexible to get under the toilet bowl. I've only used it once, but it did a good job on some stubborn stains. Great feature is the storage design so the brush doesn't leak onto the floor or other services. I like the sleek design of the holder so it looks nice if it stored more visible out in the open. Yet it can fit in many small spaces. There is also the option to hang it on the well with the sticky mounting squares included. The only thing I'm not sure about is how durable it will be and time will tell.Afte reading reviews of multiple products I chose this one. It’s compact and easy to assemble. It feels lightweight but gets the job done. For me it’s an improvement over the brushes that I’ve used for years. They are pretty disgusting. I’ve tried disposable pads on a reusable wand but they are expensive for a one use product. So far so good.What a great product. Works better than I thought it would!It does not really do a good cleaning job. love the concept and the ease of keeping the toilet brush clean - but it is too flexible / soft.The brush does not bend around the toilet bowl properly. It is useless.Product as described