I'm a firm believer in Sandisk card technology, but they don't do a 16Gb SDHC card, as yet, whilst everyone else is selling their 16Gb for less than Sandisk's 8gb Extreme III (which is very fast)
anyone got a transcend/ridata/lexar/adata or whatever they can truly recommend as almost Sandisk fast?
those 'class 6' stamps seem to differentiate little between good, very good and blazing write/read rates, so it is nigh impossible to tell.
sadly Rob Galbraith seems to stick to lower capacities in SD card analysis, though some other brands e.g. Lexar dont do so badly.