APX 25 was pretty amazing.
Me, I'm currently loaded with 400 bulk loads! I got my hand on a roll of short date Tri-X and I still got plenty of Arista 400, so I guess fine grain won't be in my near future!
It's funny 'cause I would be tempted to use faster speed film on an 8x10 since the lenses are so slow and the surface so big that grain really isn't a problem...