Ok, I realize there are many walk behinds to buy, however I'm looking at these brands: Toro, Scag, Exmark, John Deere. They are sold locally. Since this is all new to me, what are your suggestions regarding: gear drive vs. hydro, floating vs. non-floating deck, etc......... This is only going to be a part time business for me (one or two days a week). Any input would be appreciated.