I used the Pat's system on both my
L3010 and
L3430 and it worked pretty well. The only problem I had was the tractor linkage, which maintains the lift arm separation, had some play. Occasionally, I would have to get off the machine to align the Pat's hooks with the implement pins. You have to get off anyway to attach the top link so it wasn't any big deal. Keep in mind the Pat's system extends the length of your lift arms about 4" which may or may not be a problem with your implements. You also have to check the tightness of the Pats mounting bolts since they occasionally work loose. In any case, the Pat's does simplify and reduce the time necessary to switch implements and is worth the price IMO.
I bought a set of Pats for the new MX5800 but haven't installed them yet. So far, I've been using the lift arm extenders that came on the machine. If the MX goes the way of the L's, it won't be long before they jam up and I'll likely install the Pats.
The frame type quick hitch solves the sloppy linkage separation issue but implement top link compatibility can be a problem. If you go this route, make sure your attachments will work with the frame you choose.