I have both. My '69 RR has PS and is easy to move into and out of garage. At speed, I feel it wanders a bit (the alignment is good).

I also have a '65 Belvedere SS clone with probably the slowest ratio steering in the world. 3 point turns into the garage is fun! However, it goes straight down the road with little wandering. I would never put PS on the '65 for nostalgia reasons. They both have their place