It all comes down to money.
A decent "starter" CNC mill for the rank beginner if you can find one used would be a Bridgeport Eztrak with 3D.
If a degreed mechanical engineer can learn to read the instructions and operate it, anyone can. Probably $10k-$15K on ebay if you can find one.
Figure a few thou for a "tune up". If you go this way, we can offer assistance as we just did ours
Next for me would be a Haas Tool Room mill. Same controller as their VMC's and 3D capable. Probably $29K-$32K new equipped to the nads.
Does pretty much ANY race car stuff you'd need EXCEPT 5D cyl head machining - might do 4 though. Hard core tubing notcher!!!
Used "value" VMC's that I'd look for are BPT's VMC800-22 or VMC1000-22. Dunno costs. They use DX32 control which is the same identical control as Eztrak only with more gingerbread - 4 axis a bolt on, Don't think 5th is possible.
Next would be Haas VMC (pick your poison). Neighbor has 3 VMC's and 2 Haas lathes and they just run. Service guy was here 1 time in 4 years.
There is NO SUCH THING AS PLUG AND PLAY ANYTHING IN CNC.
Check here for discussion before you buy ANYTHING:
Great NC controller thread - NC vs PC’s
http://www.cnczone.com/forums/showth...852#post182852