Craftybear, I tend to go by designers. All I will say about what I won't buy is cheap fabric (regular price, not a good sale) It's not worth it to me for all that goes into making a quilt. :D
Some lines I love:
Jinny Beyer
Hoffman
Moda, Moda and more Moda lol
Thimbleberries
that's a few off the top of my head.