I have the SpeedCo cat.I quick attach. I have midified it, so it will fit as well on my cat II three point on my UDT.
This said, I still have to use it... I have a couple implements that will not fit, for the main reason that they are not compatible, so some cut and weld will need to be done on them. One of them is my inverted snowblower. Then, the other problem, is that the PTO shaft is too short. Also, like Piston said, you will need a bunch of sleeeves, so the cat I hitch pins will fit nice and snug on the Quick Hitch cat III ceceiver. More money to spend here. Also, some implements are not made to go on a quick hitch. I beleive the three point hitch auger is one of them. On the other hand, the quick hitch is very sweet comes time to hook up the rototiller, and the back blade as well. As mentioned by RoyJackson, they throw back your implements by three to five inches. It may create some imbalance with heavy implements. And when you turn, they may bang into something more readily. After extensively researching the other "quick hitch" avenues, it apears that the I Match ("V" type) are way ahead in terms of speed and easyness. The major drawback, is that it is a proprietary system. Absolutely all your implements need to be fully converted. All of your tractors need to be retrofitted with this system, unless you use one specific tractor, with one specific implement. When done, there is no turning back... It is a big price to pay, for what could be a huge gain. As allways, it all depends...
