I have owned two SHop Fox lathes. a mini and a midi (cant remember the model numbers). Neither of them lasted past the two year mark. Control box went out on one, and the bearings on the other.
At the time, and for the money, they were good beginners lathes. I learned a lot and made a lot of nice calls on them. In my opinion, or should I say in my experience, they just are not built to last.
I upgraded to a Delta about 6 years ago and haven't regretted a penny of the expense.