Hey Pontiac, I follow your posts. As I've said before our cases are nearly identical. I'm 74, had DaVinci at City of Hope in 2005. PSA was around 4, 3+4. PSA started creeping a few years later and has followed yours within a few points. Now around 0.6. PSA check every 6 months. Doc says as long as it keeps "creeping" we'll just keep an eye on it. Doubling time around 3 years.
Good luck and I hope we can both be watching this forum 20 years from now.
We sure do have nearly identical cases. Glad to see you are doing well. 20 years would make us only 93 and 94 years old. I am down for that, as long as we both feel good.