I've used TMZ/p3200 for a long time now combined with TX, light depending. I am considering switching to Neopan 1600 as an all around film, with TMZ on standby for big pushes. My concern though is that it seems to be much more tempermental in regards to exposure, with what seems like a steep unforgiving toe(Rodinal). I rarely meter(esp. since being stolen)and my success with correct exposure is very frustrating with Neopan 1600 exposed as a 640-800 speed film as compared to forgiving TX/TMZ. Any experience?