I just went through this process myself. After filling my MBP's internal drive with images, I needed an external drive to pickup the slack.The FreeAgents have had disastrous reviews lately, especially for the 1.5TB drives. There were/are? some major problems that cause(d) them to fail en mass. I have a 160GB FreeAgent drive that works great, but it looks like QC issues start once you break the 1TB mark.
After much deciding, I went with two 1TB Western Digital My Book drives. http://westerndigital.ca …/products.asp?driveid=353
I just hooked them up yesterday, and so far they're working great. I use the second drive to backup the first, just in case. Redundancy is never a bad thing. Western Digital is a good brand, and I've never had a problem with it in the past. I am a little disappointed by the 1 year warranty, but when I registered my product on their website, it said that the warranty expired in 2012! I don't know if it's an error but I'm planning on holding them to it (hopefully that'll never be an issue).