Love mine ... takes me forever to rotary cut but I can cut a whole quilt in an hour or two with mine, and I'm a beginner! It's not heavy and doesn't take up a lot of room but the dies and mats do ... mine are scattered all over my bedroom (much to my husband's dismay).
If you get one, all you need is the Go plus whatever dies you need to do your first quilt. There are a lot of Accuquilt-specific patterns on their website, and you can modify others and/or find non-Accuquilt patterns that will still work with existing dies. The dies are where it gets expensive so I just buy them as I need them or put them on my Christmas wish-list.