The half cushion have left/right foot clarifications on them so you don't put them on the wrong foot. They also are very nice and don't get lint all over your foot. The full cushion socks are nice BUT they shed lint all over your foot, I washed all 6 of my pair inside out to get rid of that problem but within 1 or 2 washes later they were just leaving Persian rugs on my feet when I took them off. Get the half-cushion socks there was no difference between the cushioning for me.
Dreaming of the Robin Soderling comeback 2013.