My big concern with CF is that it might be sunsetted
in the near
 future.  SD in its various incarnations seems to be gaining on CF and
 I wonder if we'll be bidding for the last bit of "NOS" CF in a few
 years.  High-speed serial interfaces seem to be the way of the
 future. 
CF cards are still being used in the brand new high-end/pro Nikon Camera's
(not sure about brands).  I'm really drooling over the Sandisk Extreme IV
cards with Firewire reader, have been for months, but haven't wanted to
spend the $$$'s yet.
Zane