I've been looking at a couple different HD's and it's kind of scary reading all the reviews. It seems as though I am destined to lose all my info. It seems as though no brand it safe from this fate either. Has got me kinda worried.
As long as you get a good name brand external HD with FireWire400/800 or eSATA, and let TimeMachine to regular backups, you have nothing to fear. HD failure can happen to anyone, at any time. If you have your whole MBP backed up on the external, then you should not lose anything if one of them kicks the bucket.
If you really wanted some serious protection to eliminate any possibility of data loss, get a dual-drive RAID enclosure setup. They run a good bit more than a single driver external (around $300 and up) but you can set the RAID preferences on a 1TB dual drive setup to mirror each drive, so you would have only 500Gigs of total space, but you would have TWO copies of the data instead of just one.
I would only recomend doing the dual drive setup for sensitive and expensive data backups. If your just backing up pics from a few camping trips, some excel spreadsheets, and a home movie of giving the dog a bath, then a single drive will work fine for you.
Oh, another thing. Don't use the USB2 connection on the drive. Even though it is rated at 480Mbs compared to 400Mbs for FireWire 400, USB batches data across the stream, breaking up segments so it can read and write in smaller increments, which effect how fast the data transfer really is in real life. FW400 sends a more constant stream of data, allowing files to be transfered fast, and video runs effertlessly right off an external drive that has FW400. FW800 is even better as it really moves data fast without breaking it up near as much. It is lightning fast.
Think of a USB drive as a walkie talkie, where communication between handsets is only one way for brief moments during the conversation. FW400/800 is like a full-duplex phone conversation where you can talk and listen at the same time, with no hesitation in the data stream as it recieves and sends data simultaniously.
Anyway, for what its worth, get a drive that has FW or eSATA, you won't be disapointed.

