For those with bumpy yards and or bad backs, you might consider a Ferris ZTR. I have both and couldn't justify a $10k lawn mower. The Ferris has spring suspension on all four wheels and really smoothed out the ride quite a bit.
They have the big/expensive models, but I opted for the 500IS. It is between a consumer and commercial and is priced accordingly but still a well built mower.
They have the big/expensive models, but I opted for the 500IS. It is between a consumer and commercial and is priced accordingly but still a well built mower.