Just my advice. My apologies if I am wrong.
im registered since 2012 just never been as active as this is my very first ASIC miner
but i agree anyone purchasing miners should do very through research on the company they buying from but if you are looking at a potential user of such miner check how long that person has been on the forum not just post counts as i can make a new account and accumulate over 100 posts in a day