Considering all three, Exmark and Ferris in 48, and the Spartan in a 54 as it does not come in a 48 or 52. Like the Suspension of the Ferris, but the Frames of the other two seem to be more durable. Just built house on 1 acre. Current mower is a Snapper Self Propelled walk behind that I purchased back in 1999 and repowered with a Honda a few years ago so I keep my mowers for a very long time.