I love lots of power, and have blissfully discovered the Jopen line. The clit motors suck large camel nads as they are more buzzy, but the internal portion or the bigger end I can quite seriously orgasm in under seven minutes flat using that end. Deep, powerful, thumpy vibrations.
I'm looking at another Jopen (probably the vr2 or vr9), or the Intensity for my next order. I like the look of the vr9 because laying down, that angle just seems so comfortable.
The Jopens are waterproof, rechargeable and easy to control once you figure out the buttons.