Which liner socks should I buy from REI?

I have a giftcard from REI and I want to use some of it to get some liner socks. Can anyone make a recommendation based on experience of any of these socks listed on this page?:

http://www.rei.com/search?vcat=REI_SEARCH&query=liner+socks&x=0&y=0

Thanks!

I wear these http://www.rei.com/product/737999 very socks - under wool rag socks in my Danners -

I often use the Wigwam Gobis http://www.rei.com/product/242098 (white, not the navy) with Smartwool heavier socks (weight dependent on the hike and temperature conditions). I think the REI socks that Steve mentions are basically the same (for 50 cents less). I also carry several extra pairs on backpacks and climbs, since changing to clean dry liners helps avoid blisters (I often change the liners in the middle of the day on long hikes).

OK, thanks for the replies on that. The only difference I see between the REI and the Wigwam Gobis is the fabric:

REI : 93% CoolMax polyester/6% nylon/1% spandex
Wigwam: 100% polypropylene

I suppose it would probably help if I knew what polypropylene was =)

Polypropylene is polymerized propylene and polyester is a polymer made from specific esters. Now see, if you had taken an organic chem class in college, you would know what that means {;=>D

Both socks are made of all-synthetic, petroleum-derived materials (or is nylon coal-derived? Too long since my college chem classes, and I'm not a chemist by trade). Both polypropylene and polyester can be made into wicking fabrics, both are somewhat elastic when woven, both are fairly durable. Polyester is supposed to be better at wicking without special treatment. Personally, my feet sweat enough that I can't really tell the difference after 10 miles of hiking. I do find that Coolmax and straight polyester long johns seem to wick better than some older polypropylene ones. But, hey, you will need changes of socks anyway, so get a couple pairs of each, try them, and post the results. (That is the obligation you take on when you post questions on Trailspace {8=>O

Will do!

for future reference -

http://en.wikipedia.org/wiki/Polypropylene

http://en.wikipedia.org/wiki/Nylon