On a gear driven mower unless you're mowing a field, it's rare to "pick a gear and go ". Most lawns have obstacles like trees, shrubs,the kids swing set,the trampoline they never use anymore and so on. When I went from a gear drive to a hydro it cut my mowing time by 25%. I traded a Honda gear drive for a JD LX in 1998. As far as the Tuff Torque transmission goes, I pull a Cyclone Rake a lot in the fall to vacuum all the leaves up,a Brinly 48' plugger with cinder blocks in the weight box,an Agrifab sprayer, a lawn roller filled with water and the JD with the Tuff Torque has been trouble free for 14 years! I have serviced the hydro once during that time with Mobil 1 15w50. Thats my experience with a JD with a Tuff Torque K61.Thanks,G-man