You should clearly specify that you are using MAC OS so that you will receive the best advice from those using similar systems.  Everything works fine with P12, the only drawback is if you rely heavily on Python Scripts, you will find that the migration from Python 2 to Python 3 has broken many older scripts.  The possibility of those getting upgraded is, honestly, slim to none.  My recommendation would be to hold onto P11.  I'm on a PC so I can't give you any experienced advice so hopefully, someone with better knowledge will chime in soon.