Before finally deciding on Pinnacle, have you looked at Sony Vegas Movie Studio? You can download a trial from here:
http://mediasoftware.sonypictures.co...p2.asp?DID=531
Pinnacle, whilst good feature wise, is notoriously 'buggy', and although some people are able to use it with no problems, a lot of people have nothing but grief with it. I was a long-time user of Pinnacle Studio (since version 1), and eventually got so fed up that I looked elsewhere. I've actually settle on the full Sony Vegas (which is probably well out of your price range), but was very impressed with Sony Vegas Movie Studio which was also 100% trouble free seems extremely stable. At least give the trial a go - it won't cost you anything!