I have a pairs of light and ultralight Smartwool snowboard socks that I really like. Ive found they actually keep my feet a little warmer, and they definitely dry faster if its warmer out and your feet start to get a little sweaty.
Another brand to look into for socks is Darn Tough. Very high quality merino wool with a lifetime warranty.
I definitely prefer thin socks. I had used the Burton thick socks for years, assuming thick = warm. Tried a pair of thin socks and discovered my feet still stayed warm and were far more comfortable without all that bulk.
I definitely want to check out those Smartwool socks.
the north face outlet in woodburn has smartwools half off right now, and they gave me a 15% everything coupon when i walked in the door.
i got 7 pairs
they're not knee high snowboarding socks but i wear smartwools every day.
thinner socks are warmer because they make it easier for the blood to circulate in yer feets, and merino wool is great cuz it doesn't stink - so your boots don't stink, and it wicks sweat really well, and its pretty much just the shit.