You've got one sharp bike there! How do I know...I've got the same ride. After the 1 K service I put on the PCIII and Rush 2" Slip-Ons. I am satisfied with the Rush. I did quite a bit of research before going with the Rush. There are a lot of options. I wanted to keep the Tommy Gun look so I narrowed it down to slip-ons. Everyone I talked with said that the SE Slip-ons were just a tad bit better than stock. Don't forget if you do the slip-ons and the heavy breather you'll want to tune it.
I've got some before and after sounds bites but haven't published them yet. Would be nice if cowboy7123 would publish some sound bites too. Then we could hear stock, SE and Rush.