I've been threatening to do this for a few years, but I've finally decided to stop using PMK Pyro. I've had too many negatives ruined. I want to switch to another developer as my mainstay. I've used 510 Pyro, Pyrocat HD, Xtol, D76, F76+, HC-110, Ilfotec HC, Rodinal, Formulary 777, and Edwal 12 (plus a few others) in the past. Xtol has tended to give me flat negatives. HC-110 is versitile, but the contrast isn't always thrilling. I was told that Edwal 12 makes HP5+ "sparkle." It does, but it leaves a shiny film on the negative that has to be removed before drying. I missed a small strip of this film on a stunning 8x10 negative of Three Creeks Lake in Oregon, and it left a strip of higher density in the sky portion of the negative.

What i'm looking for is sharpness, versitility, good for Zone System, and good for varying contrast through development (i.e. stand, minimal agitation, or 2 bath).

I've narrowed down the list.

Xtol: Maybe I can get better contrast out of it. Plus: not as toxic. Minus: flat.
HC-110: Plus: versitile. Minus: flat.
F76+: Plus: Can be diluted for contrast, but I haven't tried.
D76 (or Divided D76): The standard.
DK-50: I haven't tried it yet, but some folks swear by it.

I'll also take suggestions. Any ideas?