Is not the BFL scam? shipped to nobody yet as far as I know
I have been reading and following them for a while. If they are a scam, then they have gone a very weird route. They have offices, employees, videos touring their small US facility. Update pretty consistently and a LOT of people trust them with their money although more people seem to be losing faith due to endless delays.
As has been said, the smaller models don't exactly ruin me financially so it is more of an interest in a hobby than a serious investment. If I was seriously investing in mining, I would probably pre order those KNC's but I don't have the $ for those.