Red, you are not in the market for a $500 shock and happy with your setup. OK. Understood.
Chaos stated he already has $200+ in the frond end with the Race Tech components. He is in the market for a shock and is contemplating the 420.
All I am saying is that if you are gonna spend $400 for a 420, look at the WP shock. It is in the $550 area, which is not that much more than the 420. It is a very nice unit.
No doubt this is not for everyone. A stock Busa shock is an acceptable street replacement, but in no way compares with a full aftermarket unit.
As far as the Ducs, they have their purpose. Have you ever ridden one? My only experience with the brand is my newly aquired 1992 SS. It is a great machine, extremely light and torquey. With Pilot Powers, it will do anything on the street you ask of it. Not an everyday ride, but it has its place.
As far as racing, I have no clue. Rossi would win on any brand he rode. It's not all bike- see quote below.