Make sure you listen to the 5zigen too when your looking!
+1 on the 5ZIGEN, I have it too, and its sounds just like DKs 350 DriftZ from Fast and the furious tokyo drift!!
The only problem with youtube exhaust videos are most of the mics cant handle the noise so its just distortion. Only want to get a decent comparison is the Wales meet where almost all of the brands will be there.