I think that as humans, we all have our personal likes and dislikes. Some enjoy a full on romp, lots of play, little downtime, and a more PS experience. Others, like to take it slow, enjoy, savor the time spent together. Watching for cues to each others enjoyment.
I'm always hesitant to suggest another round when he is enjoying a moment of rest. There is still time. However, what if he is one of those that is one SOG. Am I pushing him when he doesn't want to go again? Is he waiting for me to make the next move?
My opinion, MSOG came out when some would say - you're done, yes there is still time, but because you popped, its time for you to go. I always hated that, and remember agencies telling me to leave once he popped. I always felt like we were both being ripped off. Once I went independent, I realized it was my business, and my choice. So, I enjoyed the opportunity to say, hey, do you want to go again?
I still remember my Georgia Peach - such a great body, his accent was adorable. He booked me for 4 hours - it was a full on 4 hours of play. Shortly after I left, he called me back for round 2 (or was that round 10?). I gladly went back - not for the money, but because I truly enjoyed my time with him. Yes, when I did get home, I looked like an alley cat that had been out for the last 3 days, but I was truly satisfied and happy.
So, at the end of the day, it really depends on chemistry. This is not really a YMMV - but really an ability to understand the others needs and desires. Yes, I have some that don't seem to understand my cues as to what I enjoy. They think they are being the Don Juan of loving. I do decline some that invite me to see them again - the chemistry just was not there, and it's not because of my failure, or theirs. We are all human.