I am a prince fan too and began to play tennis with O3 tech.
I am more comfortable with muted feeling of port system.
Recently, I have been using TT bandit OS and very surprised that the racket is just good for me. In my opinion, prince should make both traditional rackets and O-port rackets. If they completely go back to normal grommet, Prince will put them to more dangerous position because it means Prince admit o3 techs are complitely failed. I don't think o3 tech is worthless.
Tested many different rackets but my choice is TT bandit OS with gamma ruff @57LBS, Japanese Rebel 95 10.9oz/310g (natural gut/MSV focus hex) and Rebel 105".
Men's Tennis Apparel