I don't know if this helps but...I have a Sandisk 8g Extreme III that ran fine in my 5D2, I saw an 8g Lexar UDMA card for $70 so I bought it.


I have notice quite a bit of difference in the write times in the same camera. Not life altering but faster. The strange thing I noticed (or not) was less lag time for an image to pop up on the LCD.