Video screen capture software

I know this has been posted before, I searched and didn’t find any good results. Programs probably have changed since then anyway.

I want to record my screen into a video. I’ll be doing some simple interaction on the screen. I have video editting software and I could edit the video and insert audio later myself (which is probably what I’ll do), which means I’ll need it in raw format or AVI or something editable. I just need it for a few days, so an expensive program with a demo is fine.

Thanks in advance!