Most of us hate ricers, but c'mon a large 4.5" tip is fine if thats the style you want. Its wen it takes off down the road rasping and sounding like a bee thats the bad bit!!! I have a 4.5" on my ride, it doesnt rasp at all and sounds deep and racey!!!
My exhaust is a de-cat full mongoose system...

www.mongooseexhausts.com

And btw, a aggressive looking exhaust tip is a PART of aggressive styling, Just like you cant have a single part on its own to make a car look aggressive. for eg. if you lower a ride, but some nice rims on it, and a nice kit the car will look aggressive (depending on the parts you choose) Any of those parts on their own will not look as aggressive as all put together. Same applies for the exhaust tip, you could have everything done to your ride apart from the exhaust tip, however the standard one wont look as good/aggressive as a after market one (in my taste, but each for their own!) I'm not saying standard stuff isnt ok, but its not every1's taste.