I was reading through the boards here and someone said that the fastest write speed the D200 supports is only 80x. First off, is this true? And if it is, should I just buy the cheapest card available considering that? I currently use a 4GB Lexar 133x with WA. I see a similar one on eBay for $20, but I see an 8GB Lexar Platium II 200x on sale at B&H for just $5 more. For this camera, what would be the best option for more memory?