hi, im looking to upsize to a zero turn rider. this walkbehind below is what i own right now! its a toro 52" sfs deck, 17hp kaw, t-bar control, floating deck, its got about 100 hours on it. the guy that i bought it from left it outside so there are some spots where the paint is coming off. recently serviced with new clutch, trans. belt, a few springs. HOW MUCH do you think i could sell this mower for in order to buy a zero turn mower. What zero turn mower should i get?? thanks reply please!!!!!!!