HQ screen video capture
I would go with either jing ( http://www.techsmith.com/jing.html ) free or Camtasia ( http://www.techsmith.com/camtasia.html ) both from Techsmith. 

Camtasia allow you to zoom in on part of the screen after recording but before rendering. This basically solves your problem and is great when you need to create video to a resolution that is less than the recorded resolution.