@Richard, for "critical" I mean shooting some slow moving subjects (3~8s) by street lights with an XL sized pinhole - f22~45 - and I can only do it with very fast film.
The reason I was looking at old-style emulsions is because I like how their grain looks like: it looks exactly like grain.
@David, thanks for the tip. I think I have never tried Delta 3200 in 15 years I have been shooting, so disappointed I was with T-Max.
I guess I can try to test some "stretched" HP5 or TX along with some Delta 3200.
As far as developer, what would anybody suggest beside Rodinal? Provided that grain is not an issue, it is actually desired.