Lexar makes a Professional and a Platinum II line of cards. The professional claims to write at 20Mb while the Platinum II has a write speed of 9Mb. Pricing from Lexar is $49.99 for the Professional and $29.99 for the Platinum II. I can't find anything that stipulates what the ouput speed is on the D90. I'm assuming that you could buy a card that exceeds the specs of the writing device and is therefore a waisted money. Any thoughts as to the usefulness of the 20MB write speed? I've always used SanDisk in the past and for various reasons have thought that I'd try a different brand. Any opinions on Lexar?