The yahoo group mentioned.....
http://groups.yahoo.com/group/12x36importlathes/
is an excellent source for the pros and cons on these lathes,--- a smallish group (400+) and sometimes not much activity, but a lot of info if you go thru the files.
Last spring, I was faced with a similiar situation as yours, living in La. with little to no access to american iron. I started a pretty extensive research of these lathes, and ended up being satisfied enough to choose the Birmingham 12x36. I am retired and a hobbiest, and that was a factor in my decision, as I felt my demands on the lathe would be well met --- it more than does that, and I am WELL pleased with it.
The lathe will take a gun barrel very well, and I think most folks will mount anything precision, like a barrel, with a 4 jaw.
These (import) lathes may not hold up so well under an active commercial shop setting, but myself and MANY other owners are well pleased, as you'll see reading thru the files in the yahoo group--- You'll also see the gripes....
I was really glad I had spent the many days sitting at the computer, googling up information for my choice, and when I finally decided, I had few doubts, and good confidence, that I had made a good move.
Bill
If everything seems to be going well, you have obviously overlooked something........