I've been wanting one for a long time, so I've been buying the dies and mats that I want as I find them on sale - Quilt in a Day just had a big sale and I saved a lot over the regular retail price.
This is the best value I've found so far because of all the dies it comes with - and it includes the newer (easier turning) version of the Go! cutter:
http://www.amazon.com/AccuQuilt-Mix-...ords=accuquilt
With the mix and match dies, it would be so cool to cut up what's left after each quilt and be able to sew up something quick from the scraps. If you press the fabrics right sides together and stack them in the cutter, you'll even have pairs ready to sew. I can't wait to have a cutter!
