I have an elevated card, but not THAT elevated - no freebies re TSA.
We have only the Precheck. Generally, we don't fly often but that has increased slightly in the last couple of years.
Ironically, we flew in first to LA, which gives you precheck automatically; also free luggage which i get from my Delta card anyway.
Unfortunately, my new belt set off the alarm on this last trip - both ways. In Miami, the agent said to just hand her the belt and walk back through. Quick enough.
For precheck, as you probably know, we did not have to go to JFK, just a security company in, I think, Hicksville.