My well used ML7 had back gear, and the alloy dials were replaced by resettable ones, when the longer cross slide was fitted.
I did not find it sufficiently rigid for milling, using a vertical slide, so bought a Warco Economy mill (The largest that would fit in the then current workshop)
Eventually, on retiring, sold the ML7 and upgraded to a larger and more rigid generic Taiwanese lathe, which has been use since.
Faced with your choice, although I’ve never used one, would plump for a Boxford, probably as extensively equipped as possible, AUD
Howard