PaperPrincess is correct. If you want to buy a die cut machine that will allow you to use dies from many different companies then you should look at the various Sizzix machines. I have the Sizzix Big Shot Pro and can use all the Go dies including the go studio dies as well as all the Sizzix dies and dies made by other companies for paper crafting.
The big shot Pro is their biggest machine and it doesn't fold, so I keep mine permanently set up near my cutting table. Sizzix makes 2 or 3 smaller sizes that are easy to move around if you don't have space for the bigshot Pro. Their smaller machines can also use just about any dies on the market including all the standard Go dies.
The regular Go machines are set up to work with only the regular Go dies.
Rob