Even though my 2011 doesn't have the puck system for the B&W RVK3600, the RVK3600 uses the same head as my B&W RVK3500. I would go B&W without a second thought. When I upgraded my B&W to the RVB3500 base and uprights to handle our current 5th wheel, on B&W's recommendation I used the same head that I've been using since my first Companion that I installed in September 2001. It's given me 14 years of reliable service with no problems whatsoever.
If and when I get a new truck (the current 2011 only has 24K miles), it will get a RVK3600.
Rusty