Dude... they're crazy that the clip sucks Its also replaceable. I've PERSONALLY used 2 generations of these lights. I had 5 of them for my team to use during the 24hrs of adrenalin MTB race. One fell off and was smashed apart by following riders. I picked it up on my next lap and put it back together in the pits. Its on Emily's bike now. Working flawlessly. I'm now on my 7th one (primarily because 4 of the 7 I "gave" to my teammates) and I keep moving and they end up in the wrong part of the country when I need them, oh and I have a girlfriend that may or may not consider that cars can't see her. I also just bought their newest (and better) version as you know if you've ridden behind me.
In short, the clip works great unless you're a moron or want to clip it to like a book cover or something thicker than a strap or it's mount. I have a mount on 3 of my bikes and I just switch it between all 3 as well as wearing it on my saddle bag on my roadie or my jersey pocket.
I do have one with a "broken" clip, but it's actually the way that the light holds onto the clip. It could probably be fixed.
I've also heard decent things about the cherry bombs. But superflash owns the market. No two ways about it.