Simplicity Pow'rMax 9020 is a great lawn tractor, I've tried multiple Deere's, Toro & ExMark commercials. None compare when it comes to ease of use and it has the best no scalp 60" mower deck I have ever used.
Three gear ranges with Sundstrand hydrostatic drive. "0" 3 pt hitch, individual rear brakes. Hydraulics to front, rear and cables from the rear lift to the belly deck. Mine has high flotation lugged 31 x 15.5-15 rear tires that have never failed to get me out of anything. The low profile makes it great for going under low branches.
It originally had a 19.5 HP Onan CCKB but I replaced that with a Honda 24 HP GX670 kit from Small Engine Warehouse in 2005. It is extremely reliable as I have used it 150 hours per year for the last 20 and I bought it used.