I'm a fan of tests. Helps put that little nagging voices in the back of my mind to rest about the subjective things I notice in regular use. Its interesting to note the darkness apparent in the DA shots vs anything else. I'm not sure what causes it, but one would need an EV boost to get the lens back on par with the brightness of pretty much any other lens I've used. This bothered me. I noted the same characteristic in my testing (and use). While the shots at near infinity and beyond are close are far as relative IQ, it must also be noted that the DA35 has a magnification advantage (8.8%) next to the FA31. Its subject is a bit 'closer' than the FAs, which _should_ favor the DA in the perception of fine detail - so it bodes well for the FA that its argueably still the winner from your shots, but even more apparent in the ones I took (copy variance? tighter cropping?). Putting both lenses next to the K helps to emphasize however, that both the FA and DA have high potential in these regards, its a good reference to see that.
With the short time I had my 35, I did discover the advantage such a short working distance can have in minimizing hand-shake on macro shots. This was unexpected and useful if its something one might do a lot of, perhaps even because they can now. For myself, the brightness, extra speed and IQ of the 31 make it ideal for what I do. I gathered from your tests, the same as I gathered from my own in this regard. But still, the 35 has a niche as a casual walk-around macro that can perform outside of its design as a normal shooter as well, but that darkness thing (and resulting speed hit) and sharpness made the 31 the lens I would always go to for anything outside of said casual macro work. It wasn't enough for me to keep the 35 after I had made the comparison.
Still though, for those without a 31 on hand, the 35 is obviously a good lens, its noted advantages and disadvantages about even. And at half the price, it will be more popular than the 31 as time goes on, but for me - the 31 is still in my bag.
Not to add even more LBA to already LBA'd thread, but if I might show a close-focus example of the 31 to muddy the waters a little more for everyone - hee hee!
Just had to represent the 31 afterall
Nice pics from the 35 btw Marc, you use it well! And nice cat there Frank! Though I'm sure it took some brightening