Rs / Gt
Ditto to what Pirate said..
IMO changing your bar to GT would be a waste of time.
Go ahead and try barbacks on your RS bars. If the increased comfort doesn't overcome the slight aesthetic cost you can just take 'em off and sell 'em here. They are relatively inexpensive and easy to install.
Pirate's Lair probably has some in stock.
All people are different but the addition of barbacks on my GT made a huge improvement to my comfort on the machine.
The only downside for me is that the barbacks raise me up in relation to the screen which makes wind noise more of an issue. Which is to say that b-4 barbacks an Aeroflow standard height touring screen was enough, after barbacks I had to use the Tall Aeroflow.