I've got the Zalman cooler too as was thinking about replacing the fan. Favourites at the moment are the 92mm Panaflo L, Papst or the Noiseblocker. But the more I read, the more confused I get
Then there's the issue of cost/UK availability.
Seems like the Papst may
be quieter than the Panaflo, but some report a 'clicking' noise, whilst others say they never have any problems. The Noiseblocker from Germany appears to be as quiet as the Papst and is available from http://shop.rascom.at/catalog/product_i ... 4c835d8f02
Best solution would be to have the chance to test these in YOUR system to compare...ask your retailer nicely