Oh you're absolutely right, I don't believe they're needed either, but if we get a summer like we had in the past, I'd like to keep the temps reasonable, and these fans are gonna be running SLOW as well to keep the noise down.
Its just nice to get one of me old cases back. The antec SLK3000B performed really well, but it looked like "Robbie the robot" from that film "Forbidden planet, lol. Even the wife says the atcs 200 looks prettier, so theres a result straight away.