well i got my greddy and i think its worth every buck.. it sounds a bit louder than the tanabe in my opinion... im lovin greddy every sec of the drive!!! heh
thanks for all your opinions but this post will be great use for many members when it comes to the two.. but greddy got my vote =)

 

I have the Tanabe on my is350 and it's perfect....not too loud, I've heard the greddy and it's a very nice exhaust, but a bit too loud for a luxury car in my opinion, but perfect for my mr2 turbo, Greddy Power extreme, which is what I have.