I love them both.
But, for me, two completely different experiences. I DO NOT drag knee in the canyons so the RC works out fantastically. It's not as nimble and flickable as the R6 but I love the gobs of torque available anywhere in the rev range. With that said, I took it to ride The Dragon and loved every minute of it!
The R6 is a perfect track toy (I was not racing). Light, cheap, plenty of parts to be found when the inevitable happens, and a complete blast to learn race-speeds on. Yeah, many will argue about a bigger bike, but I can't tell you how many times I'd have someone on a 1K blow by me down the straight only to pass them back 2 turns later...
For my riding style those two worked perfectly for what I used them for and would not have wanted to transpose them. *Your results may vary
If I had to choose one, I would've picked the RC hands-down. Your talking about several thousand miles on that every year vs. 5-10 trackdays on the R6, and the RC would've sufficed for a few trackdays if needed.
For me, personally I would have to take the Camaro/Muscle-car over the trackday/WRX as it would be a better tool for 95% of the work I'd do with it.