I'm not anywhere near a 3A or 3B, but you girls have BEAUTIFUL hair. I have some major hair envy right now.
I have 3c hair that I haven't straightened in over 5 years. It's just past shoulder length when dry, and almost waist length when pulled straight.

Products:
9/02/08 Went CG
05/12/09 Still CG. Cowashing with VO5 Lavender Luster. I then condition with Giovanni Smooth as Silk. Styling with VO5 Lavender Luster conditioner with my wide-toothed comb.

http://public.fotki.com/QuirkyYogini/