Although I do not have personal experience with them, it sounds to me like you want a CNC like a Shapeoko, X-Carve, Carvey, etc. Maybe a Shaper?
Which one you want will depend on the size of projects you need it to handle, which company you like better, what reviewers say, etc. I think there are people in this forum who use just about every brand of CNC Router there is.
Then, when the GF ships, you have two complementary tools, not two redundant ones.
(edit: I found out about the glowforge while researching cnc routers. I decided that I did not want to be learning two new tools at once, and went for the GF cause it was way cooler. I still want a CNC as well, and this delay may just be the push I needed to get one.)