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Bruce - might be best to clarify what you are intending to image. Typically webcams are used for planetary imaging because you are taking AVI clips then breaking that down into individual frames and stacking to combat seeing etc.
If you are intending on using it for deep sky objects like nebulae, galaxies, clusters etc, that's a different story. You are after long exposures.
I'm pretty sure the SPC900NC is recommended a lot is that it will work fine for the planetary stuff, and it's fairly cheap and easy to modify to do the long exposure stuff too. Plenty of DIY/HowTo websites around to show you.
But not sure if some of the other webcams being recommended are as cheap/easy/desirable to modifiy for long exposures. I can't speak for Mike, but I'm assuming he was recommending the DMK/DBK cameras for planetary imaging only.
If you're looking to do the deep sky stuff, you might be looking at a DSLR or CCD camera instead.
I could be reading much more into it that I should, just thought I'd clarify so you don't waste money buying a camera that you think does something it doesn't.
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