I had the T1 but returned it till they get the glitches fixed. Then I will get another one. I also have the Nook ST. Both are good readers, but I really like the Sony because of the translation dictionaries & 2 English.. The Nook only has one. As for holding them, once again I prefer the Sony. I'm not saying the Nook isn't a good reader because it is. Picture quality? You mean images in books? I think they are the same. I don't know about the differences in carrying a charge between wall or computer. It does go must faster though with the wall charge.
But if like FaithBW says if you have problems with the Nook & you live out of the USA you will have even more problems.