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I can understand your point-of-view (and am jealous of those 5 cameras, especially the large format ones!), however I still believe mono is the way to go if you want to get serious.
We're not only talking about the loss of resolution due to the bayer matrix. The mono + filters also allows:
1) Refocus at each colour channel. I can tell you from experience that each channel has a different focus point. It's minor, but it's noticeable and makes a huge difference to the final result.
2) Adjust settings at each colour channel, mainly gain - so you can end up with a properly adjusted histogram at each colour channel which ensures full dynamic range across the image.
Not to mention processing - even when I was capturing colour avi's (with a ToUcam), I still split the avi into separate colour channels and processed them independantly. It gave me far better results than processing as a colour avi.
So mono+filters forces you to do this. A colour DFK could still be processed independantly by splitting them, so you may as well get the extra benefits as posted above and get a mono+filters.
Yes it's more time, more work, more cost - but we're talking about serious hi-res planetary imaging. If you're just a casual webcam imager, then I'd agree completely about going with the colour camera.
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