I make socks from Lorna's Laces shepherds worsted 4.5 sts, works for me. The pattern is from Knitting Pure and Simple. They have several basic worsted patterns for this wool. I also double up the heel so it doesn't wear out. I am a new sock knitter so this pattern is VERY basic, but comes in lightweight, worsted and bulky. Good luck.
Oh, Jimmy Beans Wool.com is great because they have a tool that matches up yarn with your pattern and gives you choices, or you can choose a weight and find a pattern.