I am seeking input on the Grasshopper Mower. We currently maintain a cemetery each week that is 22 acres in all, 15 acres in stones. Our walk-behind units with a sulkie will mow circles around our mid-mount ztr with the capability of getting in and out of the stones better. I am currently thinking about purchasing a Grasshopper brand front mount, as obviously see that there is a variation in just about everything. My first queston is, those that have run them - do you like them? There is one model with a G2 hydro - what does this mean? Liquid-cooled or air-cooled? My next question is how well do they handle leaf cleanup with the vac system? Any input would be most appreciated.