I know this is old, but thought I would post here in case anyone pulls this thread up in a search like I did.
I have the Sizzix Fabi which is essentially identical size wise to a Big Shot.
I bought the GO! Fabric Cutting Dies by AccuQuilt: Hexagon 2-inch; 3-inch; 5-inch. (Cuts one each 2-inch; 3-inch; and 5-inch). It is too big to fit in my Fabi. The die is just 1/8-1/4" too big.
A friend had her big accuquilt cutter at a retreat, and we cut 2 1/2" strips with it for jelly rolls. Wow! That machine will spoil you fast! But then I think of the fantastic deal I got on my Fabi at Tuesday Morning, and I'm all happy again
Marcy