You can also check the discussion I started regarding the 320asa version of 120 Tri-X:
http://www.apug.org/forums/forum43/9714-trix-rodinal-adventure.html

Excellent results. I still am amazed with what I get even after more than a dozen rolls developed in this combo. The images just jump out from the negatives and even printed a small as 13x18cm you can just taste the accutance and tones. Printed 20x25cm you can see the grain in some areas (like grey skies) but not only it is not obstractive, it is a beautiful grain! And the detail is incredible.

Also check this thread for some sample images:
http://www.apug.org/forums/forum51/9919-handholding-hasselblad-notes-tri-x-120-a.html