I have Never seen or used or repaired any of these small Chinese lathes, so my opinion doesn't carry much if any weight.
I have read many post on the issues of these peices of.....equipment and wonder why someone wouldn't just buy an old Atlas, Craftsman,Southbend small lathe.
At least when you get done repairing and improving it you have something of value.
Not even close to the same size machines.
The 7x10" has a foot print of 12x24", and a weight of 72lbs. The largest of the 7" family is the 7x16", with a footprint 10x31" and a weight of 90lbs. Even the largest of these lathes can be hand carried by one adult of average strength, and easily moved by two people.
The only common USA made lathes you can really compare to the smaller import lathes are the 6x18 Atlas / Craftsman (aka 101.xxx) and the AA / Dunlap / Craftsman 6x18 and 6x12" (aka109.xxx).
Atlas 618 has a much deeper foot print thanks to the rear mounted motor, 22x33" with a weight of 120-140lbs (varies based on motor chosen, mounting board etc). A strong individual can move it alone, but it is awkward and really should be done with two people.
The AA / Dunlap / Craftsman is marginally smaller and about 40lbs lighter, but also a significantly lesser machine.
One could have a good debate on the Atlas 618 vs import 7x16" that would ultimately only be settled by an individuals needs, each having places where they are better than the other. Import is variable speed with a larger swing and spindle bore, Atlas has a back gear and was arguably better made when new (42-86 years ago).
I don't think that there is much if any debate about all but the absolute worst of the imports being better than the AA lathes.
Even the smallest 9x17" that South Bend offered dwarfs most of these imports and has a weight in the range of 250-300lbs. Those very short bed South Bend lathes are also not terribly common.
Until you get into the 9x20 and 10x22 imports, there is very little on the vintage market to directly compete in this niche.