I have a newbie question as I am learning. I know there are many tablets that are the same one being sold by different vendors (flatpad, zenpad4, wiipad, apad, etc.). Although they all have the same specs and same Android version whatever that maybe, the performance can vary because the ROM maybe different. Is this correct?In other words, lets assume the flatpad, zenpad4 and wiipad have the same exact specs and use Android 2.1. One would think that the performance should be the same. However, it seems that each vendor maybe using a different ROM which can affect performance. So performance can vary although the tablets may have the same exact specs and Android version.Am I correct in thinking this? Or am I way off? Please explain as I am learning how Android works. Thank you very much!!