Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Beware of counterfeits!!!

I purchased the M1GN through an Amazon associate and received the expected red and black card in the Sony M1GN packaging. The card looks legit however the rear of the card was stamped MSX-M1GST (their low speed model). Software analysis of the file transfer rate shows 15-20 m/sec consistent with their low speed cards. If you are purchasing this for a digicam or camcorder to get the higher frame rates provided by the high speed version, you won't. I contacted Sony and they are aware these cards are a serious problem. Google "MSX-M1GN" and "fake" and you will see how huge this problem really is. If the price is too good to be true, it probably isn't true (as I have just discovered).