Love mine a lot. Work great (used them on granite only), a bit more difficult to clean but that's what you have a nut tool for. Steep price, I wouldn't have bought them and tried them out if they weren't on sale. The colored plastic helps identify them, but I have heard that it can retain water in and cause them to eventually rust or corrode e.g. by sea water. The idea to curve them horizontally but keep them straight vertically sounds better than (I think?) what the WC version offers.
I was also saved by #3 on my first lead...after a #4 popped out. I suppose it is all about how you place them, and having a nut tool handy allows you to place them deeper without worries.

Works well, gets the job done, the flat back side with the two hooks offers enough surface to whack it with your bare hand and still get the fallen-on nut out of the crack! I haven't had to use the cam extraction feature yet, so no comment there. If you find the multiple hooks too annoying when the tool is racked, lay a knot with your keeper cord/prussik loop over each side next to the hooks.

Maybe it's me, but I don't find it that good. The curves allow it to cam well, but that is at the expense of the range--it either fits precisely or doesn't fit at all. And I don't see why the shortest side is curved outwards: that also helps reduce the range. In fact, I have never been able to place one in the "other" orientation using the shortest side and the opposite one. The WC version has the short side curved inwards thus exposing two edges instead of one long thin round face, which, I suppose, would truly give it two options for placement. But having said that, I admit that I almost always find a placement for the only hex I own (#6 sent by mistake instead of nut #6).