I have a P1S with AMS and am considering adding a second AMS, is adding the AMS2pro the correct choice?
Sure. It is compatible and a good choice.
I wouldnt use the term “correct”, since all AMS except the lite would be “correct”
Depends what you are looking for. The AMS 1 is still very capable. The AMS 2 has a few QOL improvements like drying, faster speeds, and serviceabilty, but also costs $50 more.
Thank you very much for your confirmation that they will play well together.
Blessings