One of the benefits I have experienced when shooting the SD1M is the choice of lenses. I still love my little bricks (DP Merrills), but I am finding I shoot with the SD1M more because I have a choice of lenses (and bokeh).
I hope you are getting your kit together!
Darlene, I still enjoy shooting DP2M as well. My kit is pretty much all set: a850+28/1.8 & 85/1.4; DP2M & Pentax67+105/2.4. 28mm cries for an Art version though.
SD1M does provide a greater lens choice, but all the best Sigma lenses are designed for a full frame sensor, that Foveon is unable to brace till this day. Yet even at their full image circle they don't make me excited. I'm talking about Sigma's 35/1.4 Art, 50/1.4 Art, 85/1.4 that I tried on different FF bodies. I don't doubt they are among the best in their class/focal length. I'm sure they can get the job done with satisfying results. I can get those with an underdog 28/1.8. But none of them make me excited enough to invest into a body to shoot with. I have plenty of cameras already for my modest needs. And I must add that a 6x7 film redefined my personal image quality standards that a current state of 35mm sensor and lens market barely meets, besides a convenience factor, of course. Pixel-level sharpness has nothing to do with it.
Sigma could have done better yes, maybe simple with more aperture blades. But I do not really know a lot about the engineering of lenses, does the leaf shutter compromise? I dont know.
It's not just the number of blades that may spoil the bokeh rendering. Shoot wide open and it will show that busy, high contrast bokeh spiced with onion rings in highlights and harsh transitions into out of focus areas anyway (not in all scenarios). DP2M is even worse than DP3M in this regard. Yet we still try to make the best out of the tools available to us and somehow succeed despite some of their rendering deficiencies. Images posted in this sub forum prove it.