I have been cutting for the last few years with a 52" Belt drive Toro Proline with Toro TruTrack Sulky. I go threw 2-3 sets of drive belts in 6-8 months mowing 15-20 yards a week. Belts costin $100/set. It seems like a lot of wear. The mower is a 1995 and I was considering upgrading to a hydro. What have you guys experienced or reccommend? With this amount of wear on belts how much will it cost to maintain a hydro?