Looking at purchasing a Cub M60 Tank. Really like the mower but have read mixed reviews so I thought I'd get an opinion on here. It's got the Kawasaki engine, 420 hours, and the dealer had just replaced the hydro pump. Any input would be appreciated... I am mowing about 4 acres of lawn and currently have a Cub GTX2100 with a 54" deck that takes about 3 hours to mow and looking to cut down on that time with a zero-turn. Any advice on this M60 Tank is much appreciated! Thanks!