I have the HF 3in1 Chinese. It needs some upgrading as the parts break, but nothing you won't be able to handle. They're on sale now too.
But if you have the $$$, I'd advise a Smithy. Much better quality, "Yankee" engineered (not a Metric conversion like the Chinese), and quick to get repair parts for (took me many months to get a replacement part for the Chinese). Smithy also has periodic sales on damaged, blems, and returned machines - a really good deal.
Back to the Chinese from HF - it is more than adequate for AK's, AR-15's, and 1911's. I've done all of them on it. Also turned down heavy 20" AR-15 barrels to carbine length, contoured, and threaded for FH. Piece of cake.
The HF Chinese will also thread Metric as well as Yankee.
If you're used to a Bridgeport and/or US lathe, the dials and gearing will throw you at first. I don't even pay attention to them any more. I dial indicate everything instead.
I had trouble with the motors, too. Had to have a motor electrician reset the point gaps so they'd work. Not a big deal, but annoying. (Possibly a shipping problem).
A good starting point for prospective hobby machinists. There's always somebody who'll buy it when you're ready to move up.
BTW: it is *heavy*...