I'm considering the Sandisk 512MB Ultra II SD PLUS, Secure Digital (SD) Card/USB Flash Drive for use in a ultra-compact point & shoot (it will be the Pentax Optio S6). Anyone familiar with, or used this card? If it is as good as the other Sandisk Cards, I would use this rather than buy a regular card and then have to get a card reader for it, since I only have a CF reader now. Opinions? Comments?