Great socks, soft and good looking, and they stay on his feet better than anything I'd tried at the time.  (Since then I found simple Hanes ankle socks for boys, but they're very boring looking by comparison.)

Downside: they fit his feet perfectly around 3 months, but the older and older he gets the more the heel tends to end up on the underside of the foot and off the socks come.  I think these would have better for birth to 6 month range than 3-12.  (Then again, after meeting more babies I'm finding that mine has gigantic feet.  Your mileage may vary.)