I started out wearing only Smartwool socks for running/gym workouts, but have since made the switch to using Injinji toe socks exclusively. My hammertoes like the material that the individual toe pockets provide...it keeps my toes from rubbing and irritating each other (which they do, when wearing normal socks). I wear both the Injinji Performance series, and the NuWool...and like them both equally as much. I'm excited to hear that they will be coming out with a more cushioned sock, as I think their current product line is just a tad bit too thin for my liking.

But for biking, I wear only Smartwool or DeFeet (Blaze and Woolie Boolie only). My feet are very picky when it comes to socks. (: