Here is my situation, I already have a 52-ZTR Gravely but I am looking for another mower. I have enough saved for a Walk-Behind but have been looking at the Legacy Simplicty RIding Tractor. Would you purchase a walkbehind or pay for half of the LEgacy and finance the other half? THE REASON I NEED ANOTHER mower is for some big open mowing and a few hillside jobs that I have! Will the walk behind hang on the hill?