Get a full size mill and a seperate lathe when you need it, Enco has mills starting at around $750 with free shipping. The combo mill/lathes I have heard about are pretty good for lathe work, taping holes and drilling holes, but for accurate milling they suck because of the giant spacer you need between the table and the work piece for small parts like slides and frames when you are working on their sides.
Kharn
Kharn