You got it right there Dandalay, although you have to give it to the grannies - long may they prosper!
When I was 17 I fancied my pal's mums like crazy - a 35 year old woman seemed to me to be at the peak of her sexual attraction. Now, many years later, I still think 35 year old's have the edge over other ages - they are experienced, enthusiastic, they know what they want, and they really know how to give it!