Hi Kirby, the type and brands of media available will be determined by what camera you decide to purchase. Some cameras use Memory Sticks, some use CompactFlash, others use SmartMedia, etc.
If you're into research

here are a few links you might like to check out.
For a general comparison of the various types of media you might like to review this chart
http://www.dcviews.com/tutors/tt59221.htm.
For a comparison of read/write speeds for various CompactFlash media and readers you might like to read this article at DPReview (
http://www.dpreview.com/articles/mediacompare/default.asp) .
Also, yep, cameras vary in their write speed capabilities as well. To see a comparison using the Canon EOS D30 as an example check out this article (
http://www.d-store.com/d-store/Canon/D30/D30compactflasandmicrodrivespeed.htm).
Happy shopping,
Deb
PS: If you really want to get snazy, there are also Professional grade cards with 80X write speeds!

Sorry, just had to add that in.
