I have to chime in here. I have been unimpressed thus far with S30V. I have several folders in this steel, and will not be buying any more knives with S30V as there are too many other good steels in designs that I like. Specifically, I have found the edge retention to be on par with 1095 or AUS 8, which is to say good, but not great. Being stainless, I'm not going to be chopping with it, but for as much as this steel costs, I was really hoping for better. For me, I'm sticking with D2 for smaller folders.
As for the INFI v.s. CPM 3V, I have found 3V to be about the same as D2 in edge retention, which is to say, great. I have a Peacemaker and a First Strike, and am amazed at how well they hold their edges in cutting abrasive mediums. I think the Peacemaker is one of the best designed small fixed blades that I have ever held, both in steel, geometry, and ergonomics. I have medium sized hands. I haven't done any toughness tests, nor am I going to bend them, although I appreciate others posting their results. I know INFI is extremely impact resistant, and has very good edge retention in cutting, although so far not quite as good as CPM 3V for me.
For my favorite outdoor blades, for small the Fehrman Peacemaker is always on my belt, and for a camp knife, either my Steelheart E or my First Strike serve my needs very well. As does my Camp Tramp, but that's a different thread....