I have narrowed my search down to two tablets which seem to be pretty good. Witstech A81-G and Herotab M802-APAD The Herotab seems to have a little more power and more memory. The Witstech has GPS which is nice. I would like to know if either one has a better implementation of the Android system - i.e., more polished, or less buggy. Also, when the new version of Android for tablets comes out next year, will you be able to upgrade to that system? Thanks!