I have both a Sizzix and a GO....GO was first, then big shot (Sizzix) on sale when local hobby lobby discontinued in their inventory...picked up dies that I did not have w/GO. I use both, depending which dies I need....each has good/bad, but still better than rotary cutting...
BTW- to delineate die design from background, I use a silver sharpie....just run it along the blade and you have the outline. I also mark lines about 1/4" away from cut so I know where to place fabric piece.....I have even marked.some with cutting size .... Just for my own info...