All the women I know and have "played" with prefer the Hitachi Magic Wand. It is especially enjoyable with RCG anal to annihilate the clit.  Just watch any Kink.com shoots for examples.  A condom can be placed over the "head" if you have multiple partners.

Forget being a pile driver, act like a limo driver - take her special places in a special way...

Peace

I like the old model of the jack rabbit but there is something called Lelo that is good also.