Doug--thanks! I didn't know about those limits. The thing is, that if, say, a 3.0 SD spec comes out with yet-more-expanded address space, it's likely to still be backwards-compatible. While SDHC cards can't be used in SD-only cameras, SDHC-capable cameras can still use both SDHC and SD. I'd expect future developments to be the same--not to leave us with orphaned cards, and to further encourage us to upgrade our gear

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CF may have an edge with an open standard. But then, so does MMC...
SJH Foto, don't worry about not comprehending the geekspeak. It just means you have a life.