This thread has got me popping open the Rodinal again for the first time in quite a while (good thing it keeps for a long time, heh). The new Tri-X, imo, loves Rodinal 1+25. ShaZAM on the blacks! I also find the midtone grain quiet lovely, more pronounced than under Xtol but with a strong bite that is preferable, and the highlights are less blown-out than what I'd been getting from X-tol as well.

Off to buy more....