I find it noticeable (depending on enlargement factor of course - enlarging a 6x7cm negative to 16x20" is enough to show the differences). Although as with all variables there is a tradeoff. The smaller, thicker Delta grains (compared to TMAX) mean slightly more prominent grain, but they are slightly easier to print than TMAX when it comes to highlight detail. But in essence I agree with you these differences are small.