Cassa

The weight on this one is just right—it stays put without needing constant readjustment, and that sculpted bulb hits the spot exactly as promised. My only complaint is I didn't order it sooner.

The sculpted bulb gives a decent stretch, and the weight is noticeable enough to feel intentional. I just wish the ergonomic curve hit the spot a bit more precisely for me, though it's still comfortable for longer sessions.