They're strong-ish, but not as strong as the big end. They're stronger than the power you'd get in a typical cheap toy. I'd put them at a four if you don't count wands in. If you do, then maybe a three. It doesn't work for my G spot, but mine is difficult. It could work for some G spots. I like the Vr9 better for G spotting and the Vr8 better for thrusting.