This is the year of PMK experimentation for me, so I've tried both in pyro. Times are shorter for HP5+ in PMK and grain seems less, even though Tri-X stains better. (I believe the Kodak specs show TX and TMZ both at a 17 in graininess.) The HP5+ also seems to have slightly greater acutance. And--even though it ought to be a small thing--the Ilford cassettes are definitely easier for me to break into. Sometimes the Kodak tops really put up a fight. Overall I give the nod to Ilford.(posted 8677 days ago)