I am looking at getting my first zero turn for my 2 acre yard. I want one that will last many years if taken care of. My yard is flat with about 20 trees and about 1/2 acre is rough. My budget is 4500 to about 6000 dollars. Here is what I have looked at and rode. Hustler Fastrack 48 19 kai 5000, Bobcat Fastcat Pro 48 19 kai 4900,Gravely 144m leftover 2008 19 kai 5100. The Gravely looks like the best deal but it and the Fastrack have the small air filter and the Bobcat has the heavy duty air filter. The Bobcat looks to be on par with the Hustler Fastrack SD except for the smaller engine. The Gravely is a Commercial unit.