Exactly how can you expect someone to answer this question? It's not like we can snap on different sized dicks and take them for a test run. We only have the experience with what we have been hard wired to.

I can't speak for other men, but I can answer yes to both questions. The one, major problem with having a big- especially thick- cock is that everything is tighter. WAY tighter than it would be for an average guy in my case. That causes a lot of pressure to cum, so either you learn to deal with that like I did, or suffer from premature ejaculation for the rest of your life.