I have a similar one, mine is a model L, I'm feeling too lazy to look up what model your is right now, but Tony's is fairly helpful.
http://www.lathes.co.uk/sheldon/
Parts are much rarer than south-bend, but it's a pretty simple machine, so not too difficult to just make what you need.
I like mine, but it's not perfect. Only 1500 rpm top speed (or 1200 rpm, cant remember right now). Pathetically short tail-stock stoke, back gears are very loud, and entire end gearing is pretty growley as well. .050 per side at .005 per revolution in 4140 is all mine wants to do, so you won't set any metal removal records with it.
I paid 1400 for my 11x36, it came with a 3 jaw, and Yasua tool post. Also a bunch of other stuff, vice, buzzbox welder, wasn't too bad a deal with all the other stuff I got.
Spindle is too small for 5C with a lever chuck, so you have to use a collet chuck, not bad, but lever style would be nice (much faster).
Also has a slightly odd size spindle thread, Shars has the rough threaded blanks, but finding used chucks that thread straight on is rare. I just buy a rough backplate and just replace what ever came with the used chuck.
light and easy to move, I'd pick it over a South Bend, partly just to be different.