i agree with him, i still have a WB but only for pool areas. are lawns are much larger though, 1-2 acre. in my case, more than 2x as fast. even on very small lawns, im much quicker on ZTR, i only run 61" too. you'd be amazed where they fit! one of the most benefical areas its better..... on a 100 degree day with crazy humidity, i can go all day without feeling like garbage.