I love my Sizzix Big shot Pro and have many dies for it. I can use Accuquilt Go and Accuquilt Studio dies too by adjusting the shim or taking it out. The only ones that do not fit are the ones that are too wide. If I had to do it again I would get the same machine. I was worried I would have a lot of waste of fabric but just the opposite. Also it increased my accuracy and ease of piecing. I am a ninja on the rotary cutter and rulers but the cutter machine is much faster. I bought the machine to decrease strain from rotary cutting. A big heavy machine like that does need a designated space. My friend bought the Sizzix Big Shot and that machine is portable and smaller but equally impressive. You can run Accuquilt Go dies on that machine also but not the Studio ones. Again as long as they fit. some of the dies for the electric Accuquilt go are very wide and will not fit but on the Accuquilt electric die cutter.
Sizzix dies run cheaper then Accuquilt dies and I like them better.