They seem to have as history of poor quality control, poor design, and poor customer service. Now don't get me wrong, not every person's experience was bad, but there are plenty out there that are willing to share their not-so-great story. You'd be hard pressed to find the same disappointment in a higher-end company like Rubicon Express.
A poor experience sticks with you and makes you want to share the story. A good experience is expected and when it happens, frequently no further thought is given to it.