I ended up with the MX5060. The only reason I actually mowed with it is the approximately 1 acre part of the lawn is absolutely flat with (I thought) nothing to hit. I was about half way through when I came up to an irrigation riser that had the cover off of it. I managed to avoid it but I can tell you, compared to the Craftsman mowers that we used for the last 40 years, the Toro is a whole lot faster. What used to take about one hour with the Craftsman now takes about 35 minutes.