South Bend is a favorite of mine, and Grizzly bought South Bend a few years back so they could gain access to their technology for the Grizzly brand lathes. For a new lathe the Grizzly is a very nice lathe too.
Be sure whatever you get has at least a 3/4" bore, but a 1" is even better! The advantage of a used lathe is you can usually get a lot of extra tooling with it for the same price. One of the disadvantages of buying from a used tool peddler is they will pull all the extra tooling and then sell it back to you as extras. I'd rather buy from a private party and take someone along who's got a good background or knowledge in lathes to make sure you get a good one. Then you can get it before a middle man pulls the extra tooling out.