D600 dust accumulation time-lapse

EVERY SINGLE D600 I have had personal access to does not have the problem.  See how a few cameras either way doesn't make much of an argument?  20 cameras is nothing, and they did not say they performed the same tests on all their other rental cameras (making their comparisons useless) and they have no idea how those cameras were used.  They also use a questionable sensor cleaning method (as pointed out by some other users).   It also stands to reason that the "cheaper" cameras get rented with "cheaper" lenses that are telescoping in nature which suck in dust.  I'm not saying any of that is definitely true, but you must look at all possible scenarios that are equally as likely as the next.

"D600 that has" to be wet cleaned weekly" - those are the comments I am talking about.  You imply that every D600 has a problem.  What is more likely? Most D600's are affected or a small percentage (which can still be a large number) of D600's are affected?

Canon's oil problems were significant enough for them to issue a service advisory for two separate models, so I guess Canon is out of the question for you too. Try Sony, they don't have a moving mirror:

http://cpn.canon-europe.com/content/news/EOS_oil_spots.do

The 5DM3 I had for testing also had dust/oil spots on the sensor when I looked for them but guess what? Most people don't go looking for them and probably never know they are there.