Yes, many are using them, including myself. I am using the Seagate FreeAgent pro and have experienced problems, but after I downloaded som Seagate software, I diasabled the External Hard Drive's (EHD) sleep mode, and now it works flawlessly. There are many threads here about the use of EHD's, including an EHD bug thread. You can buy the drives anywhere; I got mine off eBay. Stay away from the Seagate FreeAgent Pro, unless you are good with downloading and installing computer software or if you will unplug the drive after using it. There's been a lot of success with the Western Digital Drives, as well as EHD's that were built by the users with an EHD kit. Good luck.