Going slip ons was the right move for me at the time. Love the way they look and sound as well as the weight savings. I had to do it quickly because the original owner had dump pipes from the automotive store and got rid of the OEs. It was just too loud and drew way too much attention.
Having just bought the bike, I wasn't ready to shell out big money for the full exhaust, an edit solution, filter, and a dyno tune. Now I am debating between doing a 4-2-1 and selling my slip -ons or just getting a V&H header.