Ok...I have been looking at used Super Z's and have found two...help me choose which one to buy. I will be using it for my residential estate only...no commercial work. Here are the details... 1. 2005 60" Super Z, 25hp Kawasaki, Standard deck, 60 hours residential use, garage kept, excellent condition. ~$6500 2. 2005 60" Super Z, 28hp EFI Kohler, Standard deck, 160 hours...one season of commercial use, probably kept outside most of the time, very good condition, but has torn arm rest and needs new anti-scalp wheels for the deck. ~$6500 (might be able to negotiate to about $6000) I'm torn between the motor sizes, condition, and hours. Please help...thanks.