They apparently ran into some pretty serious design flaws with their test unit and were less than impressed. Here's a snip of the review.
>br> One thing we do is operate a product for an extended period under load, to ensure things go smoothly for the long haul. You just don't put your machine under load for short 30 minute bursts you know. Here is where the story turns gloomy. In hindsight after our "event", we spotted the engineering flaws earlier but didn't connect the dots until it was too late. Let me start out by turning your attention to the pump.



Link: OC Cafe