Was thinking about upgrading my stock 2gb card to a 16 or 32 soon. So I have a few questions. 1)Since my Dinc is rooted, will I have to copy anything to the new card after formatting it, or should my phone remain unaffected? 2) I know there is class 2, 4, and 6, with each having faster read/write speeds and being quite a bit more $$$. Will those speeds really make much difference when being used in my phone for backups, random files, apps, and music or videos? 3) Can I copy my sd card files to my phone's internal memory and transfer them that way? Or do I need to transfer them through my computer? Any advice or answers would be much appreciated.