SD-body for use with M42 and Leica-R lenses

Sjak wrote:

I've been bitten by the Sigma-virus after using my DP2 for a while. The colors, just wow!

Now considering my options for a Sigma DP later this year (instead of a DP1s or x) I would mosty use it with my M42 and possibly some Leica R-lenses (I already use these lenses on other systems, but leitaxing the Leica's would still keep them usable on the Fuji and Ricoh GXR)

The SD15 seems one possible option. It is (to my understanding, but correct me if I'm wrong) the same generation sensor as my DP2, and another advantage are the smaller files. A disadvantage (for my anticipated use) is the OVF and 1.7* crop factor. Other specifics that I am missing? (and is the SD14 basically just a slower version of the SD15?)

The SDQHis the other option I am considering. Advantages seem EVF and focus assist, improved ISO performance above 100 , the 1.3* crop factor, and of course buying a new Sigma is a contribution to the Foveon-cause. Disadvantage would be the file size. Other relevant specifics that I am missing?

The SD1M would seem to compare unfavorably to the SDQH, considering the price and my perceived pros of the Quattro. Or doesn't it?

I have little knowledge of the older models. Would in particular the SD10 have other specific qualities for using with vintage manual focus lenses? (besides obviously the smaller file size)

I am curious for user experience from the various SD-cams with M42 & Leica R glass. And pictures of course

My own experience: the M42 lenses I have (the Super Takumar 28mm f3.5 and the 105 f2.8) work great with the SD10, which I still have. The SD10 has a certain purity of color and crispness to the image that is just excellent, in my view. I know the sdQ is very good, and it's easier to use, but I'm not sure it's altogether better than the SD10. I think, but I'm not sure, that many/most (?) the faults of the SD10 (it sort of runs out of steam at ISO 400) could be much reduced in effect with some work in Raw Therapee or another modern PP program. So maybe good or decent images at up to ISO 800??

The sdQ also works well with the older lenses. But for me the problem is the 30mm 1.4 that came with the camera: IT'S SO GOOD (particularly when combined with the sdQ) that it makes the 28mm look weak, and not worth the trouble, might as well just go with using autofocus and the Program mode.

Meanwhile, I treasure the two Takumar lenses, and they look like little jewels.