I've not rooted or modded my new Pandigital yet because I don't have a spare SD card. In looking through the options, it seems that many mods use the external SD slot but perhaps ignore the internal. So, does it make sense to just get a new SD card or is there a benefit to upgrading the size of the internal microSD? Also, while I know that it supports up to 32 GB, how much room is typically used by the ebooks and perhaps android apps? Just wondering how large of a card I need. Thanks!