I wouldn't prefer a film's tonality to another one's tonality: both development and the light character in the scene can make a film be great for such scene...
Delta is OK for wilder pushing IMO because it's a pain for flat light scenes (it's really low contrast), and its grain (no problem with its very big size) looks a bit messy to me... I used Microphen, Perceptol, and of course DDX for it, but I find TMax3200 in TMax developer just amazing in grain, speed and tone... Delta3200 is beautiful in medium format... That's where it shines... I've used it in 35mm for the effect of its huge grain, framing to crop say half the negative... But for normal 35mm indoors shooting including groups of people or other scenes requiring some detail, Kodak makes a nice 3200 film the OP might enjoy someday... It's not Delta's grain size what looks bad for some scenes, but how small things get lost because of the combination of that size and its structure, and that doesn't happen with TMax3200... The OP or other members might be interested in comparing both of them doing a series of the same images... The difference in speed is almost nothing technically speaking, and both lose most shadow detail at 3200... TMax3200 has on TMax developer a precious clean, crisp, classic grain, like Tri-X in Rodinal but just a little bigger. Got to see a wet print to believe it.
Cheers,
Juan