i am wondering which one will do better in rwhp and if anyone can tell me why it is better. i have heard from a few people that the toda headers are starting to crack after a while can someone verify this. also if you need a link to view the both of them here it is.

http://www.gruppe-s.com/S2000/s2kex.htm

it's all the way at the bottom of the page

 

Both will gain you 5-10rwhp at most, so choose whichever won't make any difference aside from price and bragging rights.

As for the toda cracking, i think there is some miscommunication and rumors out there. What cracks is the the support bracket at the end, which really doesn't do anything as the headers is light enough where the bracket isn't even needed. Hence the Amuse header doesn't even come with the bracket.