Higher CC nothing to do with "gimicks" for those who do the miles it means less gear changing, easier cruising and no strain carrying all the gear. Getting a shaft drive also eases the maintenance and less crud at the back from a chain. Worthwhile also looking at cost of maintenance and what the service intervals are.
Best way is to get out and ride some bigger bikes and see how you like the handling, braking and what it can carry. There is loads to choose from and R3's not for everyone but some of us like the power and handling.....oh and have toured on them and done the miles to have an opinion