I've been looking at this sd card for my dsi, but Im not too sure whether its good enough to play games on etc, cause I've heard if your sd card isn't fast enough demanding games will lag? The specs of the sd; PNY 16GB Optima High Speed SD HC Card 100% compatible with all devices using SD Secure Digital cards. 5-year guarantee Sustained write speed: 8 Mb/s Sustained read speed: 20 Mb/s (133x) Compatible only with SDHC host devices. The SDHC compatibility of a device is signalized on its documentation by the SDHC logo. SD Optima High Capacity & High Speed Card Speed: Class 4: Write: 8MB/s Read: 20MB/s Data Retention 1000,000 hours Or should I be looking to go for sandisk extreme iii 8gb sdhc card?