I am about to take the plunge and purchase either a small ZTR or a WB. All of the yards that I have are residential, and over half of them have gates that my 42" tractor can barely squeeze through. I would like to buy a 44" ZTR, but it would not fit into the back yards of most of my accounts. A friend works at a Kubota dealership that also handles Gravely. He has quoted me a price of $3900 on a Gravely 34 ZTR, and since the dealership is just over the state line from me in Oklahoma, I will not be charged sales tax (savings of several hundred dollars). I have no experience with a commercial walk behind and I would like for you guys to give me your opinions of the 34ZTR vs. a 36" walk behind. Would the 36" walk behind be able to cut as fast as the 34ZTR since I would be on foot behind it? The accounts that I have now are all on level ground, but there are lots of properties in my area that are on sloped ground. I know these are pretty elementary questions, but I have very limited experience and I don't want to make a mistake that I will regret later. Thanks in advance for all of your help.