I've had both. Well, a 19 year old and a 47 year old. Not at the same time. Both were above average.
The teen had no idea how to suck cock. The milf had such hand-mouth coordination I had to muster all my mental energy to not explode in her mouth.
The teen gave exaggerated moans that were a bit fake. The milf seemed to be really into it.
I got the teen to squirt by eating her out. The milf stopped me eating her pussy and insisted I fuck her.
The teen's body was not tight but she had the most brilliant skin I hd ever seen. Almost flawless. The milf had taken care of herself but was approaching her by-date, clearly.
I stopped seeing the teen after the first few fucks and haven't seen her since. At 19, she had already fucked 22 men (she was proud of this), came from a fucked up family, was an alcoholic, was on Prozac, had some sort of anti-pregnancy implant in her right arm (I shit you not) and was already beginning to dabble in hard drugs ("cocaine is brilliant!")
The milf was a divorcee with kids who just wanted to have some fun with a boy toy. Best sex of my life really. We stopped after a few months because it was becoming a relationship and the age gap was a problem.