I'm a big fan of Xtol. I tried it when it first came out and haven't even thought of switching since.
I use it one shot 1:1 through 1:3, although have a client who exposes Delta 3200 at EI 12,800 and I use stock for that. Love the dev. Sharper and less grain than D-76 and, I think it gives me smoother tonality. It's a great all round developer.
The only other one I use is Rodinal when I have images that just need that special Rodinal look.
I can't explain what happened with edebill and the sudden death. I know it'll drive me nuts all weekend. But then I really do need to get a life!!