Brian...first off, let me share my experience. I've been turning since 2006. I've turned and demoed on numerous makes, including the high end lathes. At least 15 Powermatic 3520bs, a Robust American Beauty, several Jet lathes, a Serious SL2542, etc. I have the G0800 Grizzly, which is the same lathe as the Harvey Turbo-60, which was made by Harvey for Grizzly before they decided to keep that frame exclusively to market for themselves. The only difference is they went to a D/C 2 hp motor with controller, which is industrial duty, and my lathe has an A/C 3 hp motor with inverter.
The Harvey T-60 is a highly precision machine. The ways are highly polished, and the lathe is a heavy duty beast with a nice swing away tailstock, sliding headstock unit. My centers lined up to a precision degree, and the tailstock quill has ACME threads, which are hardened. The spindle lock is much better in my opinion than the ones on PM 3520 lathes. The belt is a special made for high torque applications, which is needed for low speed turning of heavy wood.
When I decided to get my Grizzly version, I was almost ready to pull the trigger on a Robust American Beauty, but after doing deep dives in research and looking at the build, I went ahead a got the G0800, Harvey T-60 clone. I could not be happier with my purchase. I have not had a single issue, not one, after 4 years! That lathe is as nice to turn on as any Oneway 2436, Robust, or others I have turned on. I turn some big heavy wood at times, and my lathe has handled it very well. The bearings on the spindle are all bigger than a baseball! The precision machining on this lathe shows up in how smooth and quiet it operates.
When I relocate and get my bigger shop built, I may still get a Robust American Beauty, because I really like that lathe, but I'm keeping my Harvey cloned G0800, as it is every bit as much a pleasure to turn on as the Robust AB. It is truly a premium turning platform. I also have the bed extension for it, and can turn off the end with the headstock moved to the end, and the swingaway engaged. The banjo riser can be ordered to use with the bed extension. All lock up solidly, and are heavy duty.
Good luck with your decision. BTW, I have spoken with Harvey reps over the phone, and they stand by their machines. I don't know how things have developed over the course of the pandemic, with supply chain issues, but my experience has been all positive.....John Hicks has the Turbo-60, and reports from him are all positive from what I've read.