The 650 will not be as fast as the ZRX- the v-1000 will not handle like the 650.
I've ridden mine(650) 13 hours in one day and I don't think I could have done that on a whole lot of bikes. That being said, the seat sucks.
Getting it in the twisties is where this bike shines. It handles like a sport bike even with somewhat lack-luster brakes.
With all the aftermarket parts, you can pretty much build the bike you want.
I hate to say it, but the FJ-09 might be a bit closer to what you want if you're willing to give up on Kawasaki...
2014 Versys ABS