What exactly is wrong the XR-7 deck in northern grasses such as Kentucky Blue Grass? I always see people bashing the cut quality of these mowers, but they usually aren't specific. Do they leave stragglers or uneven areas? Don't they bag or mulch well? The reason I ask is because there are some excellent deals on demo Hustler units at my dealer; the dealer is close and they appear to have good service. Specifically, I am looking at a 60" Super Z with 31hp and with 50 hours that is about $2000 off the list price. The only thing holding me back from buying one is the questionable cut quality.