[Mech_Eng]

Let me preface by saying: I am not a professional machinist or anything. I agree that you should buy the largest machine you can afford/handle. I'm pretty sure even a 3 phase machine can be converted to a single leg fairly easily since ou already have 220v. I personally bought the Grizzly G0463 and have enjoyed it at least for aluminum(6x20 table). One thing I can highly recommend especially if you are new to milling is a variable speed spindle without changing belts, it really helps to dial in cutting speeds for a newbie like me. Additionally I bought my mill because of the weight, at 455lb it's heavy enough to do light work but does not require a forklift to move....this machine also has the capability for a power feed table which I bought and really enjoy. Lastly be prepared to spend as much on tooling as the initial machine investment. Good luck!