After ten years, my vote is still for the Eroscillator, especially now that they've come out with the Soft Finger attachment to go with it. I think the reason I may be so fond of it is because it oscillates rather than vibrates. Most vibrators (like the Hitachi Wand) make me go numb after a short period of time. I don't have that problem with the Eroscillator.
I really like the fact that it comes with an extra long power cord that I can discretely run behind my chest of drawers beside the bed, thereby keeping it plugged in for handy access. Because it's electric, I also never have to worry about charging it ahead of time or replacing batteries at inconvenient times.