I always go with whatever the lady I'm with likes the best. That's meant a Magic Wand on one occasion, a rabbit on another, a regular vibrator but with a "g-spot curve" for someone else. If I'm using a toy on the lady, my one aim is to bring her to an orgasm, so it makes the most sense to use whatever works well for her.
Answer me honestly now. Is there anything that's quite as sexy as a woman coming?