In reply to maisie: Basically, whatever make of 4 season wool-based socks best suits your foot size/shape.
Most sock sizes cover a fair few shoe sizes so getting a great fit can be slightly more tricky than you might think and otherwise superb socks may end up being marginally too tight or too loose depending on your exact foot shape.
For example, size medium in Bridgedale seem to fit me better than the equivalent from Teko so I have used Bridgedale Summit for several years now.
Possibly worth trying (or even buying) a couple of different pairs then deciding what feels better.