A new 32Gb SanDisk Extreme Pro CF would cost me around 165.00 Euro (205 USD) over here in Germany. The 32Gb Sandisk Extreme Pro SD is offered for 65 Euro. Does anyone has experience using the SD cards with an adapter in a 7D? How much transfer speed would I lose when using this combination? I usually do not need high FPS. For doing single shoots, would this combination work?