Filesize on 30D is 8.2 meg. My 350D is 8meg but in raw has given me file sizes of up to 9 meg.

If you don't plan to bring computer but have an 30 or 80 gig iPod, get the little dongle for it plug in our camera and empty cards.

Come to think of it - I'm going to get me one of those dongles. Great when on a shoot and don't want to bring laptop.

/E