I was wondering what the best "common" 120mm fans are for pushing (or pulling) air through a heatercore. I heard it is better to have high pressure instead of straight CFM. (heh, this sounds similar to a pump with high head, anyway..) I also heard that 38mm fans produce more pressure than the standard size. I would also like to avoid tornados if possible, or any super loud fan. I would get a blower, but there seems to be very limited types and may be difficult to fit internally on a dual 120 rad, but if you have the "perfect" blower please provide a link.