I can't give much on this due to not riding either... but damn those new 1000RR's are SWEET!!! I really like the undertail exhaust and the electronic steering stabalizer is awesome and getting lots of rave reviews last time I checked!!! Cavin, a guy that rides with WOS every once and a while, has one and really likes it. True it isn't up to par with the power of the other liter bikes, but I've heard great things about it's suspension and chassis.
RC51 is a whole nother ball of wax... you are asking to compare 2 totally different bikes! A v-twin vs a inline 4. You're not just asking to choose between a R1 and a 1000RR...