I am always trying things out for size. I mixed up a five litre batch of Kodak Xtol film developer and tried it out with a roll of Plus X. I took the photos around Oakville with my Minolta XE-7 on a bike ride this morning. I tried developing with 1+1 dilution with water but I think in the future I will go with stock solution. Xtol does have the reputation of crapping out on you when you least expect it. Most likely with an important roll of film.
What I like about it, smooth tonality, very low grain, easy to mix up with room tempreture water. What I don't like,I don't know I will have to get back to you on it. I think the fear of stock solution failure is overblown but I will have to wait and see. I think I prefer the D76 gallon size and cost and I have a high comfort level with everyone's standby developer.
I do plan to try Xtol out with Kodak Tri-x at 400 ISO. This developer also has really good pushing properties. I am experimenting in the near future.