I'd take the RSV. Its torque is beastly, its relatively rare and down right sexy IMO. Being a 60* its nice and compact, narrow... great for getting into the twisties and then all that grunt to get of them.

No knock against the R6 but they are a dime a dozen. Everyones got/had one.

 

Well the most practical choice would be the r6 or a cbr600 because of insurance, parts, servicing etc. But I'm not a practical person, so I would probably end up with the RSV