I don't have any of these particular knives, but I've been a fan of CRKT knives for years. I've been abusing their KISS knife as my "river knife" for years and I've never had a problem with it. In addition to cutting its been used as a hammer, an anvil, a tiny shovel, and screw driver. It still holds its edge.
I've also got one of their Gallagher glide locks. The blade came razor sharp and after a bit over a year of around the house use, I still haven't had to sharpen it.