I hear ya....but I can tell you...handling, turning, acceleration and FUN factor have to be taken into account when comparing bikes. I loved my 426..it was a great bike. I never realized how much energy it took to ride though...until I switched bikes.
It does take energy, I'll give you that. It took me a long time to learn to relax and go fast at the same time. But in regards to handling, turning, acceleration and FUN factor; I think all the relatively modern bikes have all of these. Different personalities favor different bikes I'm sure, but put me on any bike made within the past few years and I'll be one happy rider.