The ones on Newegg seem pretty cheap, so I was just wondering, are HDD coolers necessary/a good idea if you're building a new system and trying to just keep temps down overall. My CPU, GPU, and RAM will all have some kind of cooling mechanism (Tuniq Tower heatsink, 8800GTS second slot cooler, Crucial Ballistix heat spreaders), but my HDD won't. Should I spend a few bucks on a HDD cooler, just to be safe? If I should, can I get some recommendations? Thanks!