I'd be wary with 16GB cards yet, as even 8GB are somewhat experimental. The whole SDHC thing is extremely new, and still has to stabilize at every front - the only recently fixed SD corruption issues on the OS2007 were rare and mild considered to the issues with SDHC in XP and PC hardware...

Early adopters should consider themselves unpaid beta testers at their own risk - quite a few cards will be shortlived due to design or production defects, and even more will be killed by incompatible hard- and software. If you buy the very latest and most expensive card, you'd better have the time to haggle for a refund or repair, and have no data to lose.

Sevo