WB's have their place as do ZTR's, but I have always sacrified time to use a WB on my residential lawns. My clients have became spoiled to the fact that I will lay down a great stripe and leave their lawn spotless. I talked myself into the fact that this was never going to change. WRONG!!! I have a 40 year old body that feels like it is 70, so I decided to take out the ZTR on my residential and model homes yesterday. I took a trimmer guy with me and set my rear on the Gravely 260Z all day long. Productivity was about the same (maybe a bit better), but I feel so much better having not walked (or sulky) all of the lawns. In fact, I am thinking about a change in strategy. How many of you use riders exclusively? I am thinking about a rider and a 21" on each trailer.