Just my point of view, but too big can be a waste, and too small, well, let's say it has more to do with his self-esteem in how he gets it working for him, for her. Men often say that big b**bs are a waste, to just fit into their hand is enough - but again, it is a personal thing. Some men get turned on just by the look of big hooters, so that's it for them! Whatever floats your boat, as they say.

Intimacy plays the biggest role in that you are able to both be open about likes and dislikes, plus the connection the two people have. Wham bam thank you mam, sorry guys, is not a 'connection'.

http://ezinearticles.com/?G-Spot---Techniques-To-Find-It-and-Please-Your...
..gives a lot of info - already mentioned here by some - enjoy the read!

http://www.kamasutra-sex.org/ - another link to try:

"Kama Sutra literally means "treatise on sexual pleasure." Unlike the Christian view that the sole purpose of sex is procreation, in the fourth century Hindu world that gave birth to the Kama Sutra, the cultivation of sexual pleasure, independent of procreation, was considered one of life's highest callings. The ancient Hindus believed that life had three purposes: religious piety (dharma), material success (artha), and sexual pleasure (kama). All three were equal, and the erotic was celebrated as the seat of earthly beauty. In the Hindu world the pursuit of sexual pleasure was revered as a sort of religious quest.. " ...................

Why do some ask these questions anyway? While online here just go google the thing.. ;)

~ love & gratitude ~