I love my go big. I have all three sizes but only got the baby because I found it on clearance dirt cheap. It took me awhile to start using it for more than just hexies though. I have cut several thousand hexagons for the 2 finished and one ready to start gfg's. But that was all I used it for until I fell in love with it for doing Grand Illusion, a Bonnie Hunter mystery quilt. If you are cutting something repetitious, it is so worth the cost of the dies. But if I only need a few of a particular piece , then I rotary cut. For example, I just cut a twin size hunter star quilt in a little over an hour with it. However I don't use it at all for a sampler quilt. As for appliqué, look at the available dies and see if you think you would use them.