I'm 15 and mow about 15 lawns a week (all of which have steep hills). Therefore, I'm thinking about getting a 48in mid-sized walk-behind but have no idea which one/brand to get (I don't want to spend much more than 5k). Which would u guys get...? eXmark - TTHP Hustler - TrimStar Hydro (is this a Floating Deck?) Husqvarna - 4817EFQ John Deere - 7H17 Toro - Fixed Deck Hydro Drive Any Others??