I would say BFL, but opinions on that differ.
BFL has actually shipped products in the past, so I don't think so with then. BFL's problems stem from hyping too much and delivering too little, and being too disconnected with their clients (I am one of them too). But I think they will ship eventually. I give them the benefit of the doubt because they are now producing expensive custom hardware, and it just takes time to develop a new product like that.
I'm here to call out blatant scams, like those I posted above