What criteria should I consider when buying a compact flash card?

While taking pictures in the burst mode, I want to make sure the storage is not the bottleneck. Canon Digital Rebel XT is the camera.

What criteria should I consider when buying a compact flash card?
I looked into this myself for my Nikon D200 and decided on SanDisk Extreme 2GB cards. SanDisk is one of the leading brands, they're reliable, and their CF cards come in 3 models - the Extreme (I can't help but chuckle at that term... EXTREEEEME) having the fastest write speeds. For the D200, this does make a difference. Pictures are first stored in the cameras buffer of course, but with faster cards, this buffer clears faster.
Reply:Bang for the buck. There are soooooo many discount houses blowing them out now, you have to shop them. The more megs, the higher cost. Sooo "smaller" megs are going cheap due most want the "BIG" ones.
Reply:Stay with the Sansdisk speed demon Cf cards. By all measures and reviews it is the speed standard. The Lexar disks are advertised to be faster but the Canon Camera OS is not written to take advantage of the Write WA mode of this card. For pure speed stay away from the MicroDrive cards.
Reply:Well Lets See Type and Size


for type check the device you plan to use it in and for size go with what you can afford or take a personal loan and get the largest