while I'm far from the pushiest guy here my favorite combo is probably the dullest: tri-x in D76 I run it to 3200 pretty often in my old rollei and am pretty darn happy with the results.

HP5 with similar handling only seems to work to about 1600 with me although I like plenty fine to there.

I'll post a low light indoor handheld Tri-x at 3200 in the non -gallery. I've enlarged to 8x10 and it looks pretty smooth.