Both are great. My strap-on provider is very enthusiastic. Doing it to me is apparently HER pleasure. She always goes WAY over time. Curiously, but rationally, I guess, she is turned on watching gay porn (guys). Not me. I'm lucky to have found a provider who really likes the extra stuff. Me, too.
My TS experience is varied. One couldn't get it up. One topped for a very short time. One really went for the gusto. The hardest cock goes in more easily than any toy. There is the warmth issue for those who claim to be sensitive enough to discern. All in all very pleasant.
Maybe the "both" suggestion above is the closest answer.
The other true answer is WALDT. Enjoy. Life is short.