My cousin bought an '03 Rev 800 sport. It did ride nice, but I kept having flashes of my knees smashing into the cowl upon impact of something immobile...
The power of the 800 is great, as snappy as a stock viper, but more grunt. He averaged 8mpg, it was his second day of riding it. With a 10 gallon tank...no thanks!
I did get a chance to jump the thing, about a 4 foot high ramp of sorts into softish powder. This was march 1st last year...
I thought the ride was very cushy, I liked it! But then I turned around and bottomed it out on every jump...It wasn't set up for my weight, sure, but the bottoming must be controlled before you can asses the quality of the ride! I'd imagine if you jumped up the preload to get rid of the bottoming, the ride would suffer, just like 'old' Yamahas.
The turning radius was excellent.
The ergos were racer wannabe, with poor wind protection. I wouldn't recommend it to a high milage sledder! The GSX line looks a little better to me, maybe I'm old er something?
Personally, I'd take a Viper over hte rev, it does what I expect of a sled.