Sevo's experience is 100% different than mine. I have been using both films in Rodinal for many, many years now. I like them both. I think Tmax 100 has better tonality and is my first choice, but the lack of reciprocity failure with Acros makes it my choice for any low-light medium format work.
Tmax 100, Rodinal 1+50, EI-50
Tmax 100, Rodinal 1+50, EI-50. This little image on the web does not do justice to the EXTREME fine detail this photo captured in the door.
Tmax 100, Rodinal 1+50, EI-50
Tmax 100 looks great in D76 too. This is D76 1+1. Rodinal looks a little sharper to me in final prints.
Acros, Rodinal 1+50, EI-80
Acros, Rodinal 1+50, EI-80 A 5 minute exposure at f16. Shot after the sun had just passed the horizon at sunset
Acros, Rodinal 1+50, EI-80 A two minute exposure at f22 no reciprocity failure compensation needed