I've owned the play.com own brands Class 6 and never had a problem but these are definately quicker! I use my cards on my Nikon D5000 and D3000 cameras and cannot fault them.
I know you might say .. "but I can get three for £17.99" ... the speed and quality of these cards cannot be knocked until you've tried them, hence me waiting to try before I've posted.
They even do a slightly cheaper (by pence) a micro sd card if you have an adapter...
I think it's a good deal worth sharing. :)
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