I rode a parallel twin 650 in the early 70's, and the power band was 6k and up, smooth as a babes, but, a single pin crank, v-twin revving at 4000rpm(70mph), is a different beast. Most big v-twins run 1.5krpms to 2.5krpms at 70, but the 900 is a small,(by today's standards) short stroke v-twin that must rev higher to produce any horsepower. And it will produce some horsepower. And some vibration, and IMHO will clatter like a diesel. Ironic to think when I started riding a 900cc motor was a monster.
Yes much more room to stretch out. More stable on the Highway, really nimble for it's size and weight, both on the road and parking lots. The bike itself does just fine at upwards of 80, it's the people,like me, who have trouble with the revs.
But I am going to keep mine for a little while longer.
Just my opinion of course.
"I am a modern cowboy, on a steel horse I ride"
09 VN900 Classic
Big 3 +++++