I see you haven't had much of a response yet, (though you should have!)
so I'll throw in my two $cents$ worth:
I got a Polaroid PDC640SE as a "Safety Award" at work, and though I'm glad to have a digicam, I can't say that this cam does much but take bare minimum "snapshot" quality pics, and that's if all the lighting is right... wouldn't recommend it for anyone looking for a
decent cam, though it does get your pics onto the computer.
Uh, more to the point,
Olympus makes several very fine digital cameras, though not listed in your poll.
Olympus comes highly recommended by several friends that own them (and I have seen the results from..
good pics!), and some websites I've glanced at.
The high end Kodaks are on there, too.
I hope I have not inadvertently given a mark for this cam in your poll, for I do NOT consider it a decent one!
Merely adequate.