Looking to buy a new zt mower. Currently have an old Dixon from the 90s that I'm going to sell. Figure anything will be an upgrade from it. I have less than an acre, fairly flat, slight slope. I've been looking at a 42 hustler, gravely z 42" and a Husqvarna z246 with kawi fr engine. The others have a kholer 7000 pro I think. Which is best? The Husqvarna and hustler are around same price of 2500. The gravely is $2900 out the door but has .5 hrs on it and was taken to trade shows. All 2016 models. Help me decide. Thanks!