Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ok, so far. But had 1 DOA out of 3 cards

This card works great in my Canon HF10 camcorder. So I purchased a second card. It arrived dead. I couldn't use it on any camera or computer. Formatting would generate an error. Amazon made the return extremely easy, and sent a replacement. The replacement is fine.Not sure how well it will hold up over time. I've alway used Sandisk, and never had any kind of failure. So the DOA card and all the one-star reviews make me a bit nervous. I hope this is a simple case of bad quality control, rather than bad design.