I love my Acer notebook. Light weight easy to use, but it is small. I also have an Android tablet PC, you can get those with the keyboard case or without, and they are definately light weight. I normally just use it for reading the E-Books... that and the AngryBirds.
The Acer is mainly for writing and videos, but both have built in wireless so getting online is no problem. A bit slow if there isn't a very good signal, but that happens even with the bigger laptops. I have no troubles with either of mine.