hey taipan, like what the others are saying, you dont really need one with all those fans, im sure the hard drive will be fine, but remember though, the cooler the hard drive, the longer it will last, like how it is for everything i suppose, including cpu's...
GlobalWin's IStorm cooler is nice, it uses a lateral cross-flow flan, also vantec hard drive coolers with 3 2mm fans and king kong hard drive coolers, same fans, but the fans are attached to an aluminum bay, kinda like a heatsink for the hd....
hope that helped...