camstudio.
It's basically the same thing as hypercam, etc. There's no quality difference, they all use the same video compressors that are on your computer. You could record a video in Camstudio or Hypercam and then record one in the $300 Camtasia Studio and have the exact same quality. They all just have different interfaces, pretty much.
You can also choose 100% uncompressed in anything, which is exactly what fraps does.