If you do a search for "Quick Hitch" or "quickhitch", you'll find quite a few threads or posts.
The lower link type, sold on TBN as Pat's Easy Change are quite versatile and require no modifications to any implements. However, they do add about 4"-5" to the distance between the PTO stub shaft and the implement gearbox (if it's a driven implement). It's possible you'd need a longer driveshaft or PTO stub shaft extender. I did when I installed Pat's on my 790. You may also need a longer top link (I didn't, but I had to extend the top link as long as it would go).
The 3PH Quickhitch is manufactured and sold by both tractor dealers and implement manufacturers. I have a Deere brand, purchased when I bought my 4400 a few months ago. Other then my ballast box (Deere brand), it doesn't fit any of my implements (Befco RFM, Land Pride rotary cutter, Woods
chipper). Each of these implements will require modificaton for the quickhitch to work. Once that's done (it's a Fall/Winter project), the implements should hook up as easily as the ballast box does now.
Both require pretty careful backing up to the implement to get the draft link pins as closely aligned to the implement's pins as you can. You'll still probably have to wiggle some implements. You'll still have to manually rig the implement driveshaft to your tractor's PTO.