If you are on Facebook, go to Accuquilt and Beyond and ask to join. You will get a lot of ideas from the other members to help you with your decision.
I started with the regular Go! last summer from a Craigslist purchase. I really liked it but I upgraded to a Go!Big earlier this year.
It really depends on your reason for wanting a die cutter and how much room you have to use it. I make charity quilts from scraps so I am happy with my Go! Cutters plus both are portable. I know Studio owners love their machines especially because they can cut up to 10 layers at a time, are easy to crank, and can use all of the Go! dies.
Good luck with your decision.
Connie