Peterson stopped production of Aculux 2 back in '06. I ended up stocking up on the stuff which I finally finished back in September. Since then, Peterson announced Aculux 3 but it apparently hasn't made it over the Pond yet. I, for one, am eagerly awaiting it. In the meantime, I'm using Ilford Perceptol. I've never been a big fan of powders but I love the incredibly fine grain I get with it, especially using Ilford Pan F and FP4. And I can shoot Pan F at ISO 25 which, for me, is a really advantage since I tend to shoot wide open to get as shallow a depth of field as possible.