If you want to do normal comuting tasks, like:
Typing documents.
Surfing the internet for long peroids of time.
Running programs that normal computers run.
I'd get the iBook or PowerBook G4. They are cheaper, they are an actual computer and they can still run Leopard and preform pretty well
-Good luck!!!
This. My upgraded iBook works awesome for what I need it for, and can still do some things an iPad wouldn't do, despite it's age. Also, for the cash spent on an iPad, I could have bought and upgraded three iBooks.