Loads of options out there, but decide if you want vertical of horizontal and go from there!
If you really want to buy new, I'd look at the smaller Eastern european machines rather than the Taiwanese. They seem to be much more capable, and there are a lot more small machines than there used to be!
Personally, I'd go the secondhand route. Not sure what's around in the U.S. but while medium size machines go for good money here in the U.K, you can get smaller stuff for reasonable prices. Centec are pretty much what everybody starts with, but if you hunt around you will find small Marlow's, Harrison's, and even older Austrian made Emco's. The latter are vastly underrated machines in my opinion!