It looks like the reviewers that were disapointed with the drive's performance were using them in a "normal" computer environment. Although variable, these are basically 5400RPM drives which are perfectly fine in TiVo. There are probably hundreds of them being used by TCF members with very positive feedback so I wouldn't hesitate to use one. True, although IIRC someone created a useable image on a USB thumb drive. The WD10EVDS is a dedicated A/V drive so there would be no need to adjust the AAM (it's already very quiet). There are a number of folks using them here...it would be just fine.