I am looking into getting a new mower. I was thinking about a 42 inch ztr but I am now thinking about getting a 36 inch walk behind. Most of the properties I have are smaller so I dont need anything bigger. What is the benefits of a ztr over a walk behind? And I have seen walk behinds that are gear driven or hydro, which one is better. And Lastly, what brand would you guys recommend, I looking to spend around $2,000 max.