Digital BW, The Print

While we are on films and developers - I would like some input. For most 
of my medium format work I used Kodak PanX either developed in very 
dilute (1:100) Rodinal or the Zone VI developer. Pan X is no longer 
available and I long since run out of my stock in the freezer. So I'm 
looking for a new 120 film. After doing some research I decided to give 
the Ilford Delta 100 a shot. I've found a couple developers that "claim" 
to give good results with this film - one from Photographers Formulary 
and two from Patterson (one being a two part developer which claims 
great latitude and flexibility).

Has any one had any experience with either this film these developers or 
these combinations. Any other suggestions out there. Same question for 
4x5. I currently use TriX/dilute HC110 but if there is something better, 
I'm all ears.

Thanks
Truman