I took 105 shots of the sunset tonight, but only worked on the last 5 exposures (so far). I knew those were the ones I wanted most. Just waiting for it to get dark enough to stop down the aperture and get some smooth water. Nice tip I read on Google+ was to do noise reduction on each photo before processing in Photomatix. It worked very well, much less noise. But a longer, more complex workflow. Very much worth the effort.