I have a TT element G case that has a similar size and fan set up as the V9 and the fans are quiet and the LED's are tasteful. They keep the case pretty cool.
However, I did have the rear exhaust fan freeze up on me and I had to replace it. And the side fan did not work and the replacement fan they gave cracked after about a week, trying to figure that one out. I replaced that fan with a different brand this time around.