First ill say I have a 48" Advantage belt drive walk behind. Its ok. I LOVE my Wildcat 52. I need a Hydro walk behind now. If they still made a SWZU ( the Ultimate, free float Velocity deck), it would be a done deal. But they don't. I feel the SWZ has my deck, but a pain to change height, and A bit antiquated. The SWZT has nice height adjust, updated control levers, but no velocity deck, aluminum spindles, and LIGHTWEIGHT Non pro hydro system I love the looks of the Turf Tracer, Kohler EFI, ECS, Free float deck, but am concerned about damp to wet clumping. ANy input would be appreciated !