Rodinal, D76 and ID-11 are all long established favourites amongst B&W users. I don't know which film you will be using, but Rodinal with fast films like Tri-X and HP5 is very much a Marmite like thing, you either love it or hate it. I mainly use Tri-X and don't like it all, much preferring D76. If you shoot Tri-X, try it anyway, you might like it.
Two final small points:
It is often written that Rodinal keeps forever. Well, it might have done so once, but the RO9 I last used went off after about 18 months. When it goes off it does so all at once, from perfectly OK one day to not working at all the next.
D76 and ID-11 are pretty much the same stuff, but D76 is cheaper per unit volume and easier to mix.
Good luck with your experiments.