Quick tip to pass on...discovered DryMax socks (
www.drymaxsports.com) at the expo before the USMC Marathon...picked up 3 pair for $15. Demo looked good so figured I'd give them a try.
26.2 miles later, they lived up to their rep...not a single blister.
They're white and I haven't rucked in them, but they get two thumbs up (performance & price) for running.