I have bought more FQ in the past than I do now. Then I started buying 1/2 yds. I think I'll stick with 1 yd pieces for the most part.
If you plan to do some FQ quilt patterns or scrappy quilts, it's a great way to add variety to your stash.
If it's a beautiful large print that would be perfect for a border, I buy 2-3 yards.