Suggestion for external HD

I'm looking to get an external to use for back-up and with Time Machine. Do I need 1TB or will 500 MB do? How much is a good price? Is there a website that would be cheaper than a BB? Thanks.

well more disk space is always better... so I guess it depends on how long you want the hard drive and how big your current hard drive is, and so forth.

This is the drive that I am looking at getting:

NewerTech miniStack FireWire and USB Hub and Hard Drive up to 750GB at OtherWorldComputing.com

How big is your current hard drive?
Which Mac do you use?
Do you need the HD to be very portable or will it mostly be on a desk?

Answers to these questions would help me determine a good match for you.

P.S. 500MB won't store very much at all but 500GB may work better for you

I suggest Apple's Time Capsule 1TB or 500GB,it was a breeze to set up and automatically backs up any changes hourly and is also a full-featured 802.11n Wi-Fi base station.I went with the 1TB so never no worries about extra space, a little pricey but you get what you pay for with Apple "top of the line"the 500GB is a good choice also.

Yeah that's the reason why I got my Time Capsule also. I needed to upgrade my router, and combining the router with another hard drive was exactly what I needed.