I bought a pair of these for a recent research photo trip in Asia with myPentax K20D 14.6MP Digital SLR Camera with Shake Reduction (Body Only).Inexpensive and 100% reliable...I shot 7,000 pix in 9 days without a single problem either loading them with images or downloading to my computer.One reviewer points out the only "downside" saying "The closest thing to a "Con" that I can think of is that if you buy this card now, it will probably become cheaper in a month or so :) No, make that 2 weeks."Actually it's been six months and they've only come down about two bucks so there's no sense waiting to buy this reliable card. (-: