I have a Land Pride and am extremely happy with it. It sure beats trying to wrestle an implement around to line everything up. Just back up to it, raise the 3 point and flip down the two levers.
The only drawback I can see is if the spacing doesn't match a particular implement. So far, everything I have fits perfectly. Well, I did have to reconfigure the bolts on top of my mower, but it was simply a matter of removing one of the bolts just below the slot where the top link goes.
I haven't heard anyone discussing a Harbor Freight quick hitch, but unless you are really rough with it, I would think it would work just fine.