IMovie video stabilization (poor quality) VS VirtualDub Deshaker

I have some DV videos that needed to be stabilized. After stabilizing in iMoive, the quality of the video becomes really bad, and it is quite unacceptable. I found a free alternative program, Deshaker, on google that is a plug-in for VirtualDub.
Check out a demo from YouTube: http://www.youtube.com/watch?v=GaPNf2Rk4qQ
The after effect is quite impressive.
Has anyone experienced with this program before? Does it keep the quality relatively better than the stabilization feature in iMovie?
Thanks guys!

Jack,
I read in MacWorlds June issue p68 that iMovie 09 stabilization will not work well cameras that have CMOS sensors. Apple admits that iMovie will not work well with these cameras there is a distortion or warping problem after the video is stabilized. A lot of newer cameras use this type sensor check your camera specs.
Steve

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