wow i thought i saw this thread last week. I am a great lover of the female orgasm. The key to a happy sex life is that female orgasm. If you are only concerned with numero uno then you will have a lot less trips to the well as you will with giving the lady what she wants. You can sure make hay if you get her addicted to a daily (even more often if you want) dose of that orgasm.
If the lady enjoys it, you'll be invited back, again and again...