I really like Ilford's Delta 100. I develop in PMK, so everything is a bit slower. You might want to try Delta 400 as well. If you're worried about grain in HP5+, the T-grain emulsions (Delta, TMax) should be much better. You'll probably find Delta 400 a little more forgiving than TMax, especially of development inconsistancies or common developers.(posted 9132 days ago)Since I don't shoot B&W in small format, I can't offer an opinion on the chromogenic films. I've read that they're as archival as color films. If you get any feedback or impressions of the dye versus traditional B&W film, I'd love to see them, as it might prompt me to carry some when I haul the 35mm around.
Delta 3200 is a true ISO 1000 film designed to pushed to 3200. Developer times and types affect it a great deal. In PMK it's an ei 800 film. Ilford claims it really likes Microphen.
I've not shot Tech Pan, but the Ilford PanF I shot was very fine grained if you can deal with an ISO 50 (32 in PMK) film.
The only thing I *don't* like about Delta 100 is that it isn't available in 5x7 sheets. I suspect I'm about to become much more familiar with HP5+ - though grain really won't be an issue there.
Hope some of this helps,
Paul