The Sizzix Pro will not take Studio dies.
The Studio dies are wood dies, 1" thick.
Sizzix Bigz are 11/16"
Accucut Go! dies are about 9/16 (hard to measure, edges are beveled)
The Sizzix pro will only take plastic-backed dies, not the wood ones. If you want to use any die out there (except wafers), you will need to get a Studio.