Yes it would be step up. The bigger the GB it is the slower it loads everytime you turn on the scanner. I have 1 16gb on the sds200 and 8gb on the sds100.
SD Standard for Video Recording There are wide discrepancies in memory access speed depending on the SD memory card manufacturer and brand. Varying speeds make it difficult to make out which card can surely record streaming contents.Recording video require a constant minimum write speed to avoid...
The most important thing is to get a "High Endurance" type of card, at least if you have Replay turned on (which writes to the card with every transmission received). Flash memory has a finite number of writes before it fails, but the high endurance cards can handle a lot more writes before failing.