I think its pretty obvious where my preferences lie. The amount of column inches I've devoted to the Leica M9 and its sensor and the Fuji and Sigma units shows how I like my files to look. And it is true that I shoot virtually everything at ISO 100 and have no particular need or desire to use anything higher. It explains why I kept the D800E in preference to the D800, though after long term use with that camera, I'm not convinced that its a genuine non-AA filtered sensor, and to be honest I don't think the difference is that significant. Plus I seem to be the only person left on the planet who actually prefers the "old" Panasonic sensors in m4/3 cameras to the Sony unit in the Olympus OM-D and now apparently in the Panasonic GH3 as well.
There is no doubt that Leica M CCD's, Sigma Foveon and Fuji X Trans sensors are more "difficult" to use and its also obvious that CCD and Foveon sensors are probably never going to be capable of producing good results at high(er) ISO's. My seemingly "flippant" comments on the D600 are not hiding (I hope) just how good I think that camera is, and to be honest a lot of my comments about how the files look and my perception of encroaching uniformity is to a large extent splitting hairs. In terms of how we mostly see photographs there isn't a huge difference and it certainly won't impact on my income. In fact its probably the reverse, since Leica, Fuji and Sigma files are certainly more difficult to work with, and since the market where I sell my works likes clean, slightly soft files anyway, I sometimes have problems getting my preferred ultra-sharp, non - AA filtered files accepted unless I work at making them look like the CMOS Bayer "standard".
But despite all this I think that a certain individuality and the potential for something great is being lost in this move to adopt something that works for most photographic scenarios. The Sigma DP2M has shown me just what its possible to achieve from a digital camera, and its now difficult for me to accept anything else. I'm interested to see what the Leica M10 will produce. Its going to be a non-AA filtered CMOS Bayer sensor, so that may give some idea as to what this is capable of in terms of sharpness etc.
I've no doubt I'll come back to this topic, but at least I do have the Sigma files to eulogise about, and hopefully enough people will buy these Sigma cameras so that this technology will survive for that small percentage of photographers who value something special and unique.