I actually use my Droid X for many things I used to have to do on my laptop. But there are still a lot of things that it is too cumbersome, or just not possible to really do on an android tab at this point. I think a 7" tab is about as small you can go and really expect to be able to use it as a netbook replacement. 10" is now getting to be pretty large tho also IMHO. I think the netbook/laptop replacement will be something like the Asus transormer or slider. Something that can be either a tab, or a netbook/laptop. Also internal storage will need to be increased on these units to be able to really compete. I like the idea of a laptop replacement type tab, but think it is a little ways off from it being a reality yet.