We use Creative Grids rulers. We have 24.5 x 6.5, 24.5 x 8.5 and 12.5 square. When we took a quilt class the instructor recommended that we pick one line of rulers and stick with it. She liked the Creative Grids, and all we had was a bargain ruler that came in the starter pack we bought. We liked her rulers so we decided to follow her recommendation. I think there is some wisdom in staying with one line of rulers.
Regarding the "sticky" on the back, I don't have any trouble with it moving the fabric like some of you have said yours do.
Darren