X-socks for me, wore them at a HM recently and found them to really support the calfs. Plus the calfs didn't feel stiff or sore the next day...........
Well I was just outside my PB, so with the amount of running I have done of late, then yeah they did.......
Oh you mean for when I do my next IM. Well we'll have to wait and see
I have worn Nike and X Socks.
X Socks were by far the best...