Just out of curiosity: Assuming you are a stills shooter walking around with a capable contemporary camera, What does it cost you to have old kind of sluggish but cheap memory cards inside? There are the obvious things like: it will take ages to flush your buffer and you can't chimp as quick as with another faster card. But will you also drain your battery way faster and get significantly less shots per charge? Any observations or research on that topic somewhere? Thanks in advance! I'd simply love to get a more detailed understanding of how things work.