I have a Jet ZX 18x60, and I like it a lot.
But, and its a big but, I got it brand new for $3500. That colors my opinion, I am sure. I doubt I would pay 11k for it.
Mine is a preproduction machine, the final production was just slightly different, so they couldnt sell it as new, gave it to the Jet dent and scratch liquidator guys instead. And somebody managed to sacrifice the sacrificial phenolic gear, so after paying $2500 for the lathe, I spent another grand on delrin gears.
Four years later, in support work for a fab shop, I have been happy with it- solidly built, accurate, nothing has gone wrong with it. I love the 3 1/8" spindle bore, its smooth and powerful, does everything I ask it to. But I dont do production on it, and my standards are pretty loose- I make press tooling, and ornamental stuff, but I dont do .0005 precision work. According to the test sheets that came with it, it will do it, but I cant say I have ever asked it to.
Quite a good $3500 lathe.
Not sure if it is worth the 11 grand though. Its definitely better than any other Jet I have seen, or any Grizzly. But that aint saying much. Jet has pretty decent parts and service, but at this price range, you are comparing to companies like Sharp and Acer, Victor, and Webb, not Harbor Freight or Grizz, and you pretty much expect they have parts in stock.
But for 11 grand, I would look at the other Taiwan brands- Victor and Acer, maybe Sharp and Kingston.
Also Tos, Lion, and Summit.
Nardini, yeah, what about Romi? do they import any big manual lathes?
What about good condition used Japanese? Mori Seiki, or the Webb Mori clones that are made in Korea? they are supposed to be really nice.