well silly me wasted $50 on a pack of denso iridiums last summer cause i had a gift card, and guess what, exact same as the $2 copper plugs. i couldnt tell a difference at all in the way the car runs. so yea you guys are prolly right, even if it gives 1-2hp more, prolly not worth the price. maybe if they get popular and have some real results i may try em.