I'm reluctant to replace the FIOS DVR, for ease of use reasons (e.g. TV guide channel), so I'd like to add storage space via eSATA. I'm also looking for something low-profile, so a 2.5" drive like this one seems reasonable. I don't know anything about enclosures though--could someone recommend one? I'm also not sure whether it's preferable to have dual-USB charging (I think the DVR has the ports) or an AC adapter. I'd appreciate any suggestions. Thanks!