"Due to low sales volume, Kodak is ending production of KODAK
PROFESSIONAL T-MAX P3200 Film (TMZ). The demand for ultra-high speed
B&W film has declined significantly, and it is no longer practical
to coat such a small volume of product.
The suggested replacement is KODAK PROFESSIONAL T-MAX 400 Film
(TMY-2). The latitude of TMY-2 allows it to handle one stop of
underexposure (EI 800) without being pushed. In low light situations,
TMY-2 delivers very good results when exposed at EI 1600 with increased
development time.
Even though P3200 is approx 2 stops faster than TMY-2 at comparable
contrast levels, that extra speed comes with a very significant grain
penalty. In fact, for most applications TMY-2 is actually the better
film choice. The exception would be extremely low light situations
where P3200 might be able to pull out some shadow detail that would
otherwise be lost with TMY-2."
http://www.kodak.com/global/en/professional/products/films/bw/tMaxP3200.jhtml