if the hard drive is just for recording vids, it doesn't need all the fancy stuff that a system hard drive would need like higher spin rate (RPM) and large amounts of cache, if you can find a 250/500 GB at 5900 RPM with something small like 8MB of cache, then it should do fine as a recording hard drive
http://www.amazon.com/dp/B001VKY8G0/?tag=pcpapi-20
possibly something like this, a western digital internal hard drive, 320 GB with a slightly lower spin rate and small amounts of cache, only 30 ish bucks, record your videos to here, edit, upload, then delete them afterwards because raw video takes up a ton of space
though I would suggest to try the other recording software first, theoretically it should still perform the same exact...