Well, I don't know too much about other software, I found Sony Vegas a while back and I've stuck with it since.
It's so easy to stitch clips together with it, and maybe when you get more confident, or have another use for it, you'll start to use it's other features. The trial, even just to put a few clips together, is worth it. Whether it's worth updating SP's for, is your own choice my friend.
Good luck with the search.