Revisiting your post if you're still around. I'm thinking I'm going to try those 2 coolers. The larger one I assume you can attach any appropriately sized fan to it so you could get a decent one and keep it quiet.
What about the small one tho for the southbridge? It's a pretty small fan like the one I have now. Have you seen that item in action? If it spins at 10,000 RPMs like the one I have now it's not really going to be an improvement
For the sake of some comparision...
Enzotech's site lists the small cooler at http://www.enzotechnology.com/slf_1.htm
Noise = 28 dBA
A decent cpu cooler like ZALMAN CNPS9500 gives
Noise = Noise Level 18.0-27.5 dBA +/- 10%
Sorta apples and oranges but it would seem at a glance that the small forged copper cooler you linked is louder than a CPU fan all by itself. Also I found it spins at 8,000 RPMs so I'm curious about vibration too.