What should I pay for a 1999 Scag Turf tiger with 170 hours with a 22 horse power kohler? Is it worth it or should I fianance another mower. My 60 in. gravely has about had it. I also have two great dane surfers (52in.) but want a new rider. I dont know what to get. Exmark? Scag? Toro? Need some advice please!