From a health safety perspective I would choose liquid concentrates.
Kodak's HC110 is my personal favourite.
The developer is supplied as a syrupy concentrate which you are supposed to
dilute 1:3 with water to make a stock solution and ultimately 1:31 to make
dilution B. I do not make stock
More important should be the characteristics that you are seeking in your
developer. The results you get from Rodinal, for instance, will be very
different from what you get with D76. Rodinal, as a liquid, is more convenient
to mix, but I would never use it with a film like Tri-X (not to say
I prefer liquids because you can mix single shots. Right now I use Rodinal a
lot for Delta 100, HP5, and FP4 (all 4x5, 8x10, 7x10 so I don't mind the
grain). I had been using HC-110 for some time previously. To me, the
shortcoming of dry chems is that you have to mix entire batches. I don't
have a
