>>2608722I have D-76 (generally good all round developer) and X-tol which I use for my medium format stuff.
It all depends on the overall effect you want from the developer. X-tol in my experience pushes best, if best means if keeps it looking like the film was not pushed.
Rodinal is most effective at slow speeds. It is exhausted very fast, so you can stand develop with it. I use that method with Rodinal unless I'm shooting 100 iso or below. It can give quite dense highlights, but in low key scenes that is not a problem.