Does anyone own the OWC Mercury Elite-AL "Quad Interface" external HD enclosure? It's the one with the eSATA/Firewire800/Firewire400/USB ports. Any opinions, warnings or praise? Do they keep the drive cool enough? I just ordered one, only to find out it's on back order. I also ordered a Western Digital "Green Power" RE2-GP 1TB drive, and the Newer Technology eSATA Extender to go with it. All will serve as a Time Machine backup drive.