Thinking of upgrading to a larger lathe

I purchased an old model "O" 1930 Heavy 9x48 South Bend lathe about 3 years ago. At the time I wasn't sure that I would use it that much and wanted to cut my teeth on it before getting something bigger and more sophisticated machine. That old machine is great and has served me well, however would like a little larger, faster and cleaner running machine now that I enjoy his hobby. I am looking for something in the 11-13 inch size with a center to center around 36-40 inches. I live in North Dakota so the option of picking up a nice used machine even out 500 miles is rare at best. I have looked at Colchester, South Bend and Jet lathes. My budget is under 3K for a nice used machine. I definitely don't want a Chinese machine if at all possible. I would welcome any and all comments/suggestions.
Thanks

Skipd1