I posted on the Homeowners forum and got no response. Thought I'd try here. I am close to buying this mower with both the 42" mulching deck for my yard at home - 1/2 acre with lots of tight spaces and overhangs - and the 56" side discharge for a clean 5 acre lot. I would appreciate opinions of the overall durability of the mower and experiences using the 56" deck. I am especially interested in the features which are different from their other models ie. Briggs Vanguard, Electric vs. Manual clutch, and also the hydraulic drive units. Thanks for your input.