Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Go with SanDisk

Lexar compact flash cards are adequate and that's about as much as I can say for them. I have found that they fail within a year or two. They are slower than SanDisk cards. (This is verified by third party tests. Do a google search for something like "compact flash card review" or "test".)The killer for me was when I found dropouts in a sequence of photos. The card had selectively stored some images and not others. Most of my images were lost. I tested the Lexar card versus my SanDisk cards. The Lexar card was the problem.