I have about 12 hours on the GY-HM100U I purchased, so my experience thus far is limited. Like you, I’m switching from larger cameras, eg., Beta and DVCAM.
Technically, the GY-HM100U produces a good image in basic well-lit situations. Do not purchase this camera if you need it for low-light situations, although CNN recently purchased 100+ for reporters who may have to cover news (some in low-light, but they probably don’t mind the inherent noise in +9 and +18 db when the story is really newsworthy.)
I purchased the camera based on its workflow attributes with FCP and its price range. I like the camera but am having to re-address certain issues, such as lack of a 3-ring lens (focus, iris, focal length). The ability to go directly to FCP is great. It’s the smallest pro camera out there, so its fantastic for tight situations. You can put this camera an inch in front of something and it focuses.
Do NOT purchase this camera for advanced shooters who do tough jobs such as camera motion combined with close-focus product work or who need to shoot quality HD in low light situations. Otherwise I think you’ll enjoy it.
Dennis Dean
The Dean Group
-It’s about results-
http://www.deangroup.com