Hi Dennis,
I was in the same situation as you when deciding which imaging souce camera I wanted to purchase. I couldn't decide which camera would best suit my needs. A DBK or DMK?
The DBK was my first choice mainly because it was a colour camera saving me from having to purchase a filter wheel and RGB filters. However, after seeing Mike Salway's planetary images (using a DMK+RGB filters) and help from others. I decided to purchase a DMK with plans to purchase some RGB filters and a filter wheel in the future.
I am still yet to purchase some filters or a filter wheel so for now, I have been taking B&W images of the planets.
If you are prepared paying some more money on filters etc definitely go for the DMK.