Personally, I didn't like how it looked in the exterior, that giant motor and belt sitting outside the tank, plus the sound. Other than that, moved water pretty good and customer service was second to none. I had a defective motor and their customer service was amazing! In fact they shipped out the new motor BEFORE I shipped out mine. In the end I wound up with a Wavebox though. If I had to do it all over, I would've went with the MP40. Both Wave2K and Wavebox take up too much valuable real estate in the tank.