Hi, I would like to buy my first tablet for this use: - read pdf documents including colour graphics like maps and plans or pictures - GPS with maps - small and handy to put it into big pocket of small bag - use of cards or USB for flash So far I have found these 7 inch tablets: - Acer Iconia Tab A 100 (only 8 GB??, weak battery?) - Samsung Galaxy Tab GT-P1010 (possible upgrade to Android 3.2??) - DELL Streak 7 (possible upgrade to Android 3.2??) Which one would you recommend? I thought about Archos but it has some problems with bubbles on display. Thank you very much.