I am looking for commercial quality ZTR for residential mowing of about 4.5 hours. Any advice on the Bad Boy Pup Mowers, 27HP Kohler w/ 48" deck. This is one impressive looking machine. Also looking at the Kubota ZG 20. I really liked the Simplicity Citation but no one seems to be using them. I think I have looked at every ZTR on the market and the Bad Boy seems to be the heaviest built, but I like the Shaft drive on the Kubota, and 4 wheel IS on the Simplicity. Totally confused, HELP!!!!!!