I'm personally not a fan of Android and like I said the 10-hour battery life of the iPad is one of the main reasons why I am choosing it. I honestly don't know how long other tablets last. I played around with a white iPad2 and I just love the colour. Obviously I will not pay double the price just for a color preference. Generally, I like all my Apple products in white.
I need something quick and efficient. If I had to choose some full-OS tablet I'd just stick with my 11Air.
Also I don't want to "waste time" with rooting/jailbreaking/tweeking, etc. I just want a product that works. Because of this I changed my phone with a K850i Sony Ericsson which doesn't even have WiFi, so no tethering.
Barnes and nobles will be releasing android 2.2 for Nook in a few weeks. It has built in e-mail, web browsing with flash support, and an app store. A $250 7" android device back up by B&N seems like a good deal. They also have a good selection of magazines.
I'm not too sure how good it will be in reading pdfs -- larger screen real estate of the ipad should be better, but is it worth double the price? The ipad 2 is also heavier, and not as portable. If you can scroll the document by touch, I don't think it should be much of a problem?
If any of you have a nook color, or happen to stop by a B&N, I would appreciate if you could voice your opinions of the device after playing around with it. I don't live in the US, and so will have to get a family member to ship it to me if I intend to buy it.