I gave it a chance because it should write faster than the base model, according to my research how it was tested with Canon DSLR. Used it about a year and now I bought one more, as I found it is true and economic (to my Canon setup).The price and performance is right to my setup and budget. Extreme III card should be more solid and steadier if you should look to (and a little faster).Heard Lexar ran well, or slightly better, with some camera brands but never try. Some no name brands could write faster and cheaper, but due to time I don't have to waste, many kinds of memory cards I now own are Sandisk, over the years, and haven't yet found problems. No hiccups. Not fun.