I have a 6682 and need a new memory card for it. Does anyone know if the performance of the phone will actually improve if i put in a DV MMCmobile card rather than a DV RS-MMC card. There is about a $10 difference in price and the MMCmobile cards apparently write much faster but can the 6682 take advanyage of this or is it simply optimised for standard DV RS-MMC cards?