I use DD-X on several films, decanting into glass and topping off with some Bloxygen when I open a new jug or draw from a partial bottle has eliminated the partial bottle shelf life problems I did have with it. All the Ilford films do beautifully in it. I use Rodinal on my slow stuff, Rollei Ortho and RPX25, and on ADOX 100 films, and to push HP5+ to 800 (not supposed to work I know, but testing can turn up some unexpected treasures). Perceptol and D96 for the motion picture films from ORWO and Double-X. I also like the current version of Studionol, RO9 Spezial for HP5+ at 400. It is my standard. And HC-110 is always on hand for sheet film, HP5 or FP4. Again, lots of testing over the years has given me great control over 810 negs with that. I much prefer liquids, but have not found anything in liquid form that can match Perceptol, and am resigned to mixing up D96 as well for the same reason.