Although I have enjoyed both, I like most when my wife goes out and gets laid. My wife goes out with a girl friend who is also married, but her husband does not know. The spontaneous nature of it is stimulating. Some guy, or sometimes, guys, think she is just a wife they score with. Coming home with a pussy full of cum, she acts embarrassed, and makes me ask her questions to hear the story. I always make sure she has an orgasm while telling me about it, reinforcing the enjoyable experience. After she has met a guy, she usually will meet him for sex for a few more times. It is fun to watch her dress for him, what she thinks is sexy. But it is not long before she is out with her friend again.
I prefer to be there, but the anticipation while she is out can be gloriously painful. I can't wait until she gets home to feed me.