I've been shooting 4x5 with Kodak Tri-X 400 and have recently moved to Ilford HP 5+ basically it's a lot cheaper and from what I can see, gives me similar resul ts. Now to the point. I shoot at night quite a lot, exposures after adjusting fo r resp. failure in the neighborhood of 8-15 minutes and sometimes an hour or mor e. So I'm looking for a film that has better resiprocity failure characteristics . I've heard that T Max 100 is good but finicky for developing. I've also heard rumor of some other films made by Agfa and Fuji but I'm under the impression tha t they are not widely available. Suggestions and personal experience would be gr eatly appreciated!

Thanks!