I've never bought a Micro SD card for anything, so I wanted to be sure I am buying the right one. I bought the DSTWO online last night from a U.S. store and decided to not buy an SD card from them, as I figured it would be cheaper to find one on my own. After going to Best Buy / Frys / Toys R Us, the 8 GBs ones are going for around $30ish. However, I found these two on Amazon for a lot cheaper. (around $11, including shipping) http://www.amazon.com/gp/offer-listing/B00...p;condition=new http://www.amazon.com/gp/offer-listing/B00...p;condition=new basically a Kingston vs a SanDisk. Are these what I need? I'm confused with the Kingston one listed as "Class 4 Flash Memory." I found some others, but say "for the samsung phone." Does it matter whether its strictly for a phone or not? Any help would be appreciated as I am quite a noob when it comes to these memory cards.