G-10 meadowlark. (read my post in this section by that name). Yeah, didn't like the looks of the knife, but I went for it anyway. I now EDC it at work and I love it.
Buck is sweet, nothing wrong there.
SAK's: I guess I'm the opposite from most here. SAK's just are not for me, I don't like them, they just don't feel right.
Have you held all of them in your hand? It's going to be a hugely personal choice. I love the Meadowlark, but you've read here that some don't like it at all. SAK's are popular and many here love them, but I'll never carry one. Get your hands on all of them, open 'em close 'em, put 'em in your pocket and pull 'em out. Then decided on your own.
Hope that helps.
mike.