We bought a an X3 mill last season and we used it nonstop(
http://www.grizzly.com/products/Mill-Drill/G0463). We converted it to a CNC over the summer to CNC for about $600 (kit from cncfusion). I would highly recommend this mill. Don't forget though, you will need a machining vice, mounting hardware, a micrometer (if you don't have on already), collets and of course end mills.