OK I'm trying to figure out if one is better than the other or if it is a wash. It seems like the separate pumps and wheel motor machine drive a bit smoother but will they both last just as long? I'm looking at the gravely pro turn 160 and ferris 700is that both have the Dual Hydro-Gear ZT-3400 transaxles with 7" mounted cooling fans. Versus a grasshopper 226v with Smooth H1 hydrostatic pump and wheel motor drive system with cooling fans and 7 micron absolute filter. And a scag tiger cat with Dual Pumps; 10cc displacement, Hydro-Gear. Am I going to notice a difference once I get out and start mowing with it and is one better than the other? Your comments are appreciated thanks!