BFL is likely scam I've seen numerous threads about BFL on scam accusations. But KNC miner is promising to deliver this October lets wait and see.
Actually end of September. They have one day and need to send today, or joining BFL club. Good luck
I doubt they will send anything.
I would recommend you to stay away from miners... Most of the stuff here is scam. Invest 1 btc and get hashrates, bla bla bla. Usually ponzi or scam :/
Or, just not worth the investment and it would take a very long time to break even with the current/future difficulties.