Doing my man bathroom over and decided to do everything is PEX. So far working with it has been pretty good, the 3/4 PEX is a little stiff to work with but I didnt want to use 1/2 inch because I also had a hose bib that I needed to do a run for also that was right next to my bathroom. Anyways, I went with the copper rings for crimping and they seem to have worked out well so far, going to do a full pressure test later today to see if I have any leaks before working on closing up the walls. The crimping tool is a little bulky, I'm sure they make a smaller handle one to get into tight spaces.
This is also the first time I've floated my own shower floor, watched a bunch of youtube videos and winged it.