Why, is 2bros just obnoxious after awhile? My buddy had it and it sounded clean, but I bet it got a lill annoying.
I really like the Tsukigi stuff; I put one on my ZRX in 99', & at the time it was the best quality system you could get for that bike. Yeah a bit more pricey than the Muzzys, but now days Muzzys & others have increased in price up to almost equal the Tuskigi. I have since sold the bike (in avatar pic <<<), & it's still got the Tsukigi on it running strong & looking great.Akropovic,Leo Vince,or Sato,Moriwaki. I prefer Akropovic because they fit,they are reasonably quiet,and make decent power.I would'nt put a two bros on a lawnmower,cheap,poor quality,poopy sound.
There are many,many small japanese companies that make beautiful systems,like what is posted above,that are harder to get,but are like works of art.
Two Brothers is second most annoying after D&D.
everything you need to know is right here...
http://bayarearidersforum.com/forums/showthread.php?t=258845