I have a Grizzly G0766 and it has performed superbly since I bought it in January 2015. Before that I owned a Grizzly G0698 18x47 lathe...it performed flawlessly until I sold it to our club in 2014 to make room for the larger G0766, and it is still going strong after 16 years, and is used all the time at the club teaching newbies, and lots of club members use it. Zero problems! I've gotten such good service from my Grizzly lathes, I bought the heavy duty beast, the G0800, a 24x48 with 3 hp and swing away tail stock two yeas ago, and it is a high end turning platform for sure.
Right now the G0766 is the best value on the market, and it will save you lots of money if you want to upgrade later from what would have been a 16" class lathe.....the G0766 is a 3 hp, lathe with advanced "M" series inverter, 22" swing, and 42" between centers for longer spindle turning. It's price is less than the Jet 16/40 or 18/40, and you won't give up a thing in performance or reliability! When the G0766 first came out it had a 25mm toolrest post,and most of us drilled it out to 1 inch, but Grizzly has done upgrades to the American specs instead of the old ones which had metric specs.....lots of owners are happy campers with their Grizzly lathes, because they are now state of the art machines, where 20 years ago they weren't.
The high end units are the ones I am referring to, so the models I can recommend are the G0733 18x47, the G0766 22x42, and the G0800, the black beast 24x48. These are all fine lathes, The G0800 is a truly premium turning platform.....the G0766 22x42 will compete in performance with the PM 3520b all day long, and has more advanced inverter and more 3hp motor. I've cored on mine without any problems which is what stresses a lathe as much as anything you use it for.