I recently purchased a 2003 YZ450F, I love it. The time has come to upgrade the exhaust. I've read a ton of articles, but there isn't a clear cut favorite for this bike. The three I'm considering are: Big Gun, Dubach and Pro Circuit. I need honest opinions and arguements for you choice. I want to get this decided before this weekend, so I need everyone's help ASAP.

Thanks in advance.....

-Andy

I live in San Diego and do a ton of dessert riding with some track......