Aneros MGX Syn Trident

The ribbed stem adds just the right amount of extra sensation once you get going, and the silicone coating feels far smoother than anything plastic I've tried. It's balanced enough that I can relax into it rather than constantly adjusting, hitting all four spots without much effort.

The silicone coating makes all the difference—so smooth and comfortable, I forgot it was even there after a few minutes. The ribbed stem gives exactly the kind of vigorous sensation I was hoping for, and the balanced shape hits all four zones without any fiddling.