I wear FiveFingers. I tried the Bikila, they are too tight across the top of my feet and for some reason make my toes cramp (too stiff?). I wear KSOs and Flows for running, Sprints for short triathlons where transition time counts more, and Classics for everyday (though often I end up wearing whatever is handy). I have ran probably 1500-2000 miles since last putting on regular running shoes (I don't tally my miles very closely).

I have looked at the new New Balance model (the very new one, can't think of the name, I've seen it in a few Outside or Runner's World magazines now), but they are too tight across the toebox for my wide feet. I'm interested to see the Merrell Trail Glove. I've seen good reviews of the Saucony minimal shoes, too, and apparently they are coming out with more.

More important than the shoe is the technique, you have to ease into it, and learn to run with a midfoot/forefoot strike or it will hurt. The chi running technique definitely fits in well with this. I had a hard time figuring that stuff out until I took off my shoes (and/or wore FiveFingers).

It's not for everyone, but it's done a lot for me.