Injinji toe socks never let me down. Not in quality, sizing or styles. When they say their sizes fit "x to x size", they mean it instead of pretending that if you are on the larger end of the size range they are just supposed to stretch and fit you well. No one like the heel cup in the arch area of your foot and say "OMG, that feels great!"
Granted, some might think they are a bit spendy for a pair of socks but they hold up like iron, wear well and don't fall apart on you within the first month. To me, that's worth it right there.