If you have a local Costco and have or know someone with a membership they have the WD Passport 2.5inch 250GB drives for 69.99. I'm not sure if they still have this deal going on but it worth a look.
NCIX.com - Buy Western Digital WDME2500TN My Passport Essential 250GB 2.5IN USB2 External Hard Drive Midnight Black - WDME2500TN In Canada.
Picked one up a few months ago and it's a great little storage drive. Not blazing fast or anything but very small and portable.