+1 to twerppoet's comments
All of your extensive pre purchase research should have shown just what he said. I use iPad2 everyday for many, many mundane tasks that could be easily be better handled with my MacBook Pro except that the iPad is there in my hands and the MBP is off in another room, either set up or in a case, and not in my hands.
Watching TV or reading a book and need a quick Google inquiry? iPad. Reading that magazine and want to check price and availability quickly for that fascinating gizmo you just read about? iPad.
Can I watch a movie on my iPhone? Sure the same ones as on my iPad but, where is my magnifying glass?
Show folks my proudest new photos on my iPhone? You are kidding, right?
Books? Yup, the same ones on my iPhone as on my iPad. Now, where did I leave that magnifying glass again? Ditto magazines. Ditto Netflix. Ditto Airstash. Ditto Slingbox.
You did good, you'll enjoy it a lot.