I've been looking at an Edge 4 gb class 6 micro sdhc on buy.com. Does anyone have experience with this brand or particular card? Also, is it worth it to get class 6? Because there is a deal for a kingston 8 gb class 4 for around 30 bucks shipped. Will class 4 run lag free on an iTouch ds or maybe a Cyclo in the future?

edit: On Amazon there is an A Data class 6 4 gb for $10.85, I heard this is a good brand, confirmation?