I have one & its not bad for the money. Same basic issues as the Harbor Freight one or the other cheap quick hitches. Same quality you'd expect from Harbor Freight gear, ugly & light weight, but gets the job done pretty well. The biggest issue is the toplink hook doesn't stick out far enough I had to weld an extra inch or 2 onto both my Northern Tool one & some other similar cheap garage sale find. Weld an inch of scrap on the back of the hook, drill 2 new holes & you are good to go. Unless it's a John Deere or Land Pride, they are all about the same cheap ones from what I've seen.
I'm finishing re-working my post hole digger to work on my quick hitch (requires a hydraulic toplink) & will more or less be setup to never take the quick hitch off again. It works great. With the TnT cylinders I can pretty much hitch up to or drop anything without getting of the tractor unless there is a PTO shaft or hydraulics involved. I'd highly recommend one, even the cheap ones.