The dilemma is real in my view if you look for all the threads on this topic on various message boards. I come from a 15PM and went to 16PM. 16PM immediately felt heavier (as it is) and uncomfortably large. As with everything, there is a tipping point. Once can overeat on pancakes and feel stuffed and then eat another piece and it's too much. Sorry for the visual.
For me it is so frustrating that I ordered a 16P and took both to work today, set up so I can jump back and forth and do the same tasks on both and compare my routine.
Also, noticed when reading email and in various apps, for the most part the 16PM adds white space but most of the content is displayed the same way sideways, with the exception of the screen being shorter 10mm so there is more scrolling.
Still, each time I use the 16P I look at the real estate of the 16PM screen and envy it, then pick it up and regret the size and weight. Back at home test the 15PM and it's manageable.
Maybe the solution is to go 16Plus while losing the ProScreen.