I have read a discussion that the oem JD quick attach is simpler in design and more importantly, weighs less.
The less the hitch weighs, the more lift capacity you have. Plus the SSQA sticks out a little further??
thankfully easy to compare lift capacity of comparable units regardless of what design they use.
I never found the SSQA version that foolproof to use. Maybe my aim was bad but
often had to fiddle and wiggle to get it hooked in. I wonder if the JD simply works better?
before you load on the dealer's oem implements, compare to Everything Attachments and other suppliers.
though I always found the premium paid for Land Pride equipment was worth it.
But for a bush hog, I went to Bush Hog...who also built my rear 84 rototiller.
For a rear blade and box blade I went to EA.
remember that a tractor is nothing but an implement carrier
so save enough money to get good implements.
if you have a 50k budget, don't spend it all on the tractor...
if you want the tractor to last forever, you will likely have the same expectations for your implements.