There was a thread elsewhere where getting parts from Harbor was reportedly NOT easy - still waiting for all I know. Had similar instance trying to get parts for a miter saw I bought from them....
I know from first hand experience that Grizzly has pretty decent service (IMO, great service) for parts. How so?
We dropped a lathe (rolled off the fork lift actually due tu impatience on part of operator). Broke odd ball handles and change box shift levers. Called them on a Friday - had parts on following Tuesday. AND the machine was several years old (vendor changes for imported hardware can make a "new lathe" obsolete when that happens).
Figured the parts would have to be massaged when they got here (been there, done that with imports) but they bolted in slick as anything and we were up and running directly.
AND Grizzly has very well written and illustrated operator/parts/service manuals available on line for download at no cost.
Parts and service mean a lot to me - more so than a slight cost penalty - especially when you break a change box handle that in all probability should last 14 lifetimes and didn't due to previosly cited dumbout.
EDIT: don't buy something you don't need.
If you want a lathe, buy a lathe, if you want a mill, buy one.
The mill/lathe combos I"ve seen were on the cheezy side and not very rigid. Complexity in search of a need if you ask me. You will ultimately find that rigidity is critical to machining, regardless of the level of accuracy you'r shooting for.