One of our planes has the Honeywell system, and I'm not too fond of it. I prefer the Universal to either one. Say you have a fltplan in the honeywell with 10 way points and AtC gives you direct to your destination and then they forgot about a MOA being active and tell you to go to XYZ (on your fltplan)and then direct. With universal, you just hit the "DIR" button and then the # of the fix on your flihtplan. With Honeywell's system, you can't go back to a previous waypoint without starting the whole flightplan over.
The Honeywell just doesn't seem as user friendly as the Universal.