Acros is great. I'm not a big TMax or Delta fan, but I do love Acros dearly. It's super-fine-grained and very high-resolution. If you want a traditional-ish negative you can do EI100 and Rodinal 1:50 for 18m, or use the magic stand-develop recipe of Rodinal 1:100 for 1 hour. Acros has so little grain that Rodinal is still smooth, plus you get actuance boost. Additionally, the best reciprocity failure of any film I'm aware of. Off the top of my head, I think it's +0 up to a minute and +1 up to 1000 seconds, which means it's usually the fastest effective film for long exposures.
Originally Posted by dhkirby
I basically keep two film stocks around, Tri-X for when I want speed, pushing, or grain, and Acros for everything else.