Anywayy, i did a few experiments just for fun. Might help you decide on what you gonna do.
1st Mod:
Kept the cats and operated on the muffler - Sounded slightly bassy. But ain't noticeable at high rpm. Not really worth the money IMHO.
2nd Mod:
Removed the cats and kept the 'operated' muffler - Sounded more bassier, ultimate drone around 2-3k rpm. Low end suffered but who cares. Sounds great. Hahaha.
3rd Mod:
Removed the Mufflers and Cats - Sounded like a BEAST. I cannot 'ANGKAT' the sound man, very loud and bubbly-ish. Backfire was a killer.... Cold start-up was really amazing but it sounded quite disgusting when revved. =p
4th Mod (Current Set-Up):
Placed the Cats back and Removed the muffler. Replaced it with stainless steel pipes. Start-up amazing as hell. Still got the bubbly-ish sound when revved. Well bubbly in a sense that it sounds like you're guggling. Don't really like that as well. Droning bad as usual.
SO, I'm most probably going to go back to my 2nd Mod soon while deciding on which exhaust i am going to get next. Either Eissenmann sports or Remus. HMMMMMM
Well good luck anyway.
CHEERS