I have one of the XT's in my Macbook Pro (i5, 8GB). It's quick, but it's not THAT quick. I had a 7200 rpm 500GB in there before... Maybe I've just gotten used to it.... So if you have a 5200RPM drive, it's a total no-brainer. Personally, I'd be tempted to put a proper SSD in the optical bay, and an hybrid in the drive bay, so I can have data/itunes/etc on the big disk, and the OS and swap on the SSD.... ideal solution. It's a worthwhile update tho, I think.

Clearly, Jeff, you don't do airtravel, or that nice Leatherman would be the property of DHS by now. I'm sure they would like it. Mine is a lot simpler: 1. iPhone 4. 2. banking token (handy if I run out of money in the "using" account when out, and I can use the iphone to transfer cash over) 3. My Barclays Cycle Hire key, so I can use my cool MonoTouch app ( http://www.londonbikeapp.com ) to find - and USE - a bike in London 4. Actual keys. How quaint! I use USB drives very rarely since I started using DropBox..... When I'm actually traveling, tho, the leatherman goes with me. SO useful - in checked luggage!