A dealer locally has one of these brand new for $6495. I have been researching it a bunch but I cannot seem to get a feel for it being a good deal for what I need. It needs to handle several acres, some of which may be thick weedy grass. Im reading reports that it might be underpowered. Then I see some that say the Kohler motor isnt as good as the Kawasaki in the 900 series. Im mostly concerned with Kohler quality and whether this unit with a 60" deck is underpowered or not. Also, aside from thick grass, it is a sloped lawn, a pretty steep hill. Is this a good mower or should I look to the next model up?