I've read all the post in this forum and I've found the White Brothers E complete system for the 400ex is the most used and best all around exhaust system available. Do you agree? If not what would be your choice?

 

Agree 100%.Love mine.Had modified my stock header and can with very good results prior but the pro meg system is far superior.Low end response is much snappier,top end just keeps pulling,mid is very strong,can pull hard out of a squared off corner two gears to high if I want.VERY VERY satisfied.Only regret is I wish I would have bought it sooner,but I had to do all my research first before I bought.