The other day I retired the Buck 110 that I've had in my pocket pretty much every day since 1992 and bought something more modern. There wasn't anything wrong with my Buck aside from requiring both hands to open and close the blade.
I wasn't expecting to be super impressed with the Fox 479 that I replaced it with but I really am. It has no play in the blade at all that I can notice, It's easy to open and close with one hand, the Emerson Wave works as advertised so it opens itself when pulled out of my pocket if I want it to and I thought that using it as a flail was just a gimmick but it sounds just like a hammer when I use it that way.
I'd like to know what the rest of you guys who have an EDC knife or multitool prefer for your pocket.