Easy to answer this Q. It's the Swiftech MC 462A. There are caveats, naturally. Your Socket A mainboard must have the four holes through it, and there must be enough real estate around the socket. If your mobo does have the holes, you'll need to remove the mainboard to install the Swiftech. And the MC 462A is expensive.
Otherwise? You just can't beat the bang for buck of the Alpha PEP-66 with a Delta 38. You may have to mod the PEP-66 so that it'll work in a vertical position on a Socket A board. It's an easy mod. With a 60 mm to 80 mm or 60 mm to 92 mm fan adapter, you won't have to listen to the Delta.