I can't make any comparison, because I have not seen the Samsung unit at all. I was backpacking a few weeks ago, and I was carrying a heavy rig. My buddy was carrying a brand new Canon SX210IS. He shot some video clips with it, and for a first-time handheld video experience, I thought it turned out OK. It does have teeny-tiny stereo microphones in the camera body, but I don't think that is going to do a whole lot for sounds of wildlife grazing 100 feet away.
I'm more used to big equipment that gets excellent results, but that is just me. Disclaimer: I have my seventh Canon camera now, so I am biased.