Like the title says, my PCP&C uses the delta fan. The sound is unbearable to me at least. So, I've decided it is time for either:
1- Buying another psu. (OCZ Powerstream 520 SLI)
2- Or changing my fan. But the problem here is that I couldn’t find a suitable fan. I don't really care about the warranty. Also, sending the psu to PCP&C is not an option because it will cost me 150$ for shipment only.

So please, anyone who moded his PCP&C with a quieter fan. Which fan do you recommend?
Any other solutions are welcome.