If you are just going to use it for applique then the Baby is sufficient- however if you are looking to cut geometrical shapes, MORE strips then one at time, Use the large hexagon, the large Rag or even the large tumbler then the GO is what you should get..
the Baby is limited in which does you can use.. the GO uses any accuquilt GO/Baby dies..
FYI- buy lots of mats.. they are basically disposable..
I love my GO- wish I had the space for the Studio..
I now have TWO GO's.. Mine died five years later and went in to get fixed and hubby got me a new one to have while my first is in the shop.. Yay Hubby !!!