What are the opinions on the Ferris SD Hydrowalk 36" mower, are they a good machine? How are they for maintenance, reliability, durability? We would not be using it commercially, but cut about 1-1/2 acres a week on our own property. We have a bushhog on a Kubota 4wd tractor for our fields and would not be using the Ferris for rough stuff. We have a chance to buy a new one for $1800.00 from a local dealer that has had this one on display for a least 2-1/2 years (the engine sticker says manuf. 2/97)... They were trying to sell this for 3100.00, but the the commercial users have been buying the dual hydraulic motor version for just a little more. We have tried the machine and really like it. Is there any reason to avoid the Ferris line? We have tried the Troybuilt 33" and the Stealth 33" and they were both lacking in many ways.