I had the opportunity to be able to finish an 80% lower on a friend's mill and thought it wouldn't be such a bad idea to get my own. Problem is, I only have space for a benchtop sized machine. Ideally I'd be spending $1,000 or less on the mill alone. What models have you guys used, and what are some of the minimum specs I should be looking for? I should mention I'm fairly new to milling so I'm looking at a machine to learn and practice on, nothing professional, especially for the price.