I got one of the smaller ones from Ben a couple of weeks ago. If you're tired of the cheap stuff that is made for "selling" instead of made for "cleaning" then this is the best thing I've ever seen. The whole base flexes so when you move around the bottom of the pool's curves, it hugs the bottom. The attachment for the pole is metal, not plastic, and it steers. That is when you twist the pole the head stays flat on the pool bottom and changes direction.

I have one of the ones pictured above and this thing is wonderful by comparison. I have not timed it but I can tell you it is much much faster, largely because you can steer it.

PS my pool is IG liner.