I use a lot of neutral scrappy, so normally buy it by half or full yard pieces and not fat quarter.
There are a lot of times I'll want to do a project that takes a lot of fabric for the background, like 5-6 yards, and I rarely have that size pieces in my stash.
The Aunt Daisy pattern would also be really neat to do controlled colors. I messed around with it on EQ8 and you can get some really neat designs doing it more like a medallion quilt too.