I actually prefer Delta 400 over HP5+
Why? Because HP5+ is so close to Tri-X, that I'd rather use Tri-X for those things.
However, as Delta 400 is significantly different than either, I like it better than the HP5+ i'd rather use tri-x for.
I do like the look...
Delta 400 in Rodinal 1:100 on Ilford MGIV RC