I have the chance to buy a 2005 52" toro timecutter with mulcherkit and 19hp kawi motor. for 3300. it has <100 hours on it..pretty much brand new..but I looked on the toro site and it says this is a residental mower. so my question is..what is the difference between a res and commerical mower? I know reliablity..but how reliable is the residental..and will it hold up doing..lets say 10 lawns a week? also...is this a good deal?