I have used some of John Hicks' recommendations and they have worked for me. I don't remember what thread it is; look around. The ones of his I have used have been:(posted 9096 days ago)ISO 1250: Xtol 1+1 75f 12 min.
ISO 1600-2000: Xtol 1+1 75f 15 min.
Search on photo.net in the Q&A also; he comes up with quite a bit of useful stuff on various topics.
He recommends Microphen for faster speeds/times. I didn't have any on hand, so I shot Delta 3200 at 3200 and developed in Xtol 1+1 75f 18min. Pretty grainy, but there. Since his other times are so good, I'll be getting some Microphen. This is a really versatile film if you know what you're after!