Oldest was 38 when I was 26. Youngest...ever was 16 when I was 19. Most younger than me was 20 when I was 30.
When I was younger, I liked older women because I couldn't figure out/didn't want to put up with younger chicks' shit. That, and there's nothing worse than 2 people who suck at it trying to fuck.
Now I like them younger, because 1) I don't care about their shit now, 2) they act so innocent...even the sluts, compared to older women, and 3) the look on their face when it's over, like "wow, so that's what fucking is all about." Young guys, heh...