I've been mower shopping since there are some to pick from finally. I'm looking at a X350 48" cut that says K46 hydrostatic intergrated with transaxle and a S240 that says K46 heavy duty hydrostatic two wheel drive. Are these the same set up? The intergrated part has me confused. Both have the Kawasaki engine, same deck, so if the transmissions are the same, I may save a few bucks and go with the S240. I've googled but can't really find an answer, I figure you guys will know!