Ok, here is my dilemma....i have the Gravely 34....love it when i can use it. Cuts very nice...buttttttttt, we have been having a ton of rain here and i mow as long as it is not raining at the time...i do this part time. Anyway, the problem i have been running into is the fact that when it is still slightly wet, it will leave track lines. It has to be a nice dry yard with solid ground for me to use it and feel good about my results, so i have been using the 21 a lot more lately. With that being said i have thought about getting a 32-36" walk behind instead. I do all smaller residential yards, but in order to make any money around here, speed is key. So the 21 works fine, but time is money and with the Gravely 34 i can get it done in a hurry, but this rainy weather has been killing me. Would something like a Better Outdoor 36" WB leave tracking lines in a yard being it only weighs 350 or so vs. the Gravely at 700+ and my big butt on it putting it a little over 900 total i think. Also, i started out wanting to get 10 yards about a month ago....well i have that now and never in my mind would i have thought i would have gotten them so quickly. I have one 2 acre lot and think i would like to start attacking more of these size and even a couple of commercial accounts in the coming year. The 34 works but takes me almost 2 hours on the 2 acre lot....a bit bumpy with several obstacles scattered throughout. I can get a new 06 model Hustler Fasttrack 44" with 18 Kohler for 3750 or one with a Kawi for 400 more or i can get a 54" Hustler Fasttrack for 5000.00. I have the 34z which i love when its dry, but if i want to go bigger i am thinking a bigger Z and a 32-36 WB might be my best combo. Get my residentials done with the WB and have the Z for the commercials and larger acreage lots. Thoughts from you experienced folks??