I can't remember where I heard it and maybe this has been mentioned already...
But...
If you really like it: buy 3 yards
if you like it: buy 2 yards
if you like it but aren't sure: buy 1 yard
I quite buying fat quarters unless for a specific project and have been happy buying yardage on colors I like best...but now I find I am short on pinks and yellows and oranges...
Kirsten