Probably will start another flame war , but will give it a shot anyhow. Gained some real practical experience in the real world in the last five years. I'd have been dust without an accountant. She only charges me $300 and has probably saved me at least 2/3 s in taxes and other costs over the five years that I operated my first tractor. The new tractor isn't as fuel efficiant as the lower H.P. tractor was, and I've also found that it won't mow any faster, because it'll go over the ground only so fast, and still do the job neatly. My customers want a neat job of mowing, and they get it. I'm at $ 75 an hour this year, and have quit apologizing about the prices. As a commercial venture, or even a side job, I wouldn't dream of not having a million dollar policy for accidents with tractor or truck. Found a pretty good National insurance Company, that is about a third cheaper than the regional Co. that was representing me.Fuel is not going to get cheaper,but am going to let the warranty expire before trying biodiesel, or alternative fuel, unless the dealer or manufacturer as willing to help out with any warranty issues, and any problems with starting the machine on alternitive fiel. Never been South of I-10, at least in TX, so don't know the brush down that way, but have seen other posts that indicate that brush does grow there, and does pretty well at that.