I am in the market for a 36in stander, and I had a few questions for the pro's. 1. Are any of you running the 15 hp Kaw having issues not having enough power for hills and thick turf? The 17hp elec start is availible, I just didn't know if it was necessary? 2. How does the cut quality compare to its larger brothers (48,52,61in Standers), and or other 36in walk-behinds? 3. Do any of you use it as your primary mower? I mow small residential lots, I will be using this as my primary work horse and wanted to make sure it is reliable. 4. Any other comments on this mower would be appreciated.