400ex question

[Blake24]

Iam definately going with a engine builders pipe......which prlly narrows it down to Sparks, Hetricks, TC, Trintiy, Duncan........price is no object and they all prlly perform the same.........
how do these pipes sound in comparison to each other?
I heard the sparks sounds really good but i just wana hear a few opinions........THANKS GUYS!!!!

[Big - D Racing]

I got the sparks x-6 and it sounds fantastic, before it I had a complete pro circuit system and it sounds better than that.