There have been lots of posts about this; try the search feature on the QB.
I have the Go. It is very compact for storage; however, to use it you need to open it up so it can spread out. Opened up and spread out it is about 30"; however, you need extra space for positioning the die and fabric for rolling through. I put it on the edge of my cutting table so there is plenty of room for my hand to crank the handle.
$199 is a great price! Purchase the individual dies that you are interested in. I find the Go *most* useful for triangles (it nips off the "ears"), tumbler and basically any odd shape. For strips, I feel I can do just as well with a June Tailor shape cutter mat.