I'm not sure the 2006 will be that much better. I'm getting 23 mpg with mainly road driving. The 2006 has more horsepower, but does that also mean more gas? With the rack and pinion steering on the 2006, do you loose ride quality. I still have the air ride on my 1998. Any thoughts would be appreciated. The 2006 has come down to 4,700.00 with 91,000 miles.