One advantage of the HP5+ is that when one air-travels there is not the concern about fogged film that one has with films nominally rated at around 1,000, such as TMZ and Delta 3200.(posted 8714 days ago)Also, if one is not going to be able to develop until returning home after a long trip then the HP5+ has a superiority; however, here I'm assuming that HP5+ can sit around post-exposure pretty much like TX can -- and TMZ can't.