It has been said many times...by myself included. u will pay bloody heck for the BMW for every accesorry, for every tuneup, for every little thing on the BMW. The new Kawi outdoes BMW at their own game... The Busa is not as fast as these bikes on a track. But it is a heavier sportbike on steroids that is much more comfortable to ride.
If u are looking for a bike to track...buy a used one at the end of the season when guys are done riding for the year..getting out of the business...or upgrading. All of the goodies like Ohlins, Brembos, quickshifters, steering dampners are already on and severly discounted...