Frankly speaking, any decent CF cards will do fine in almost all digital cameras. Of course, we will always prefer more for less money, but at the end of the day, how many people actually shoot at maximum fps all/most the time? And how often would you need that?
Imagine each image multiplied by 9... Do you really have the need for speed? The appeal of these cards is just like computers. All want fastest possible, but most play casual games and chat with it...
Personally, I think I shot at full speed only once or twice. And one was to test my new Twinmos 70x card out of curiosity. My conclusion after the test was, why bother... I don't need the high speed. I take only 3-4 continuous frames at most anyway. Even my slowest Hagiwara 64MB card can do the job :bsmilie:
Go for quality. Durability is more important than speed in most cases.