Well if you are a student like VaKo was, you could probably use Final Cut or Premier in an on-campus lab. Or at the very least, qualify for an educational discount. How about Sony Vegas -- isn't that what Darren/Paul use to put Hak5 together?
Whatever you do, check out a book or some videos on using the software. For years, I was wasting time dragging around clips on the timeline when I could have been using much more powerful methods of placing the right amount of video into the right spot. Now that I've bothered to learn, my video editing projects are going much faster.