No 2. Cost
No 1. The Experience
It is the best, as hard it is to say, but it is. There is unfortunately no worthwhile competitor to the iPad 2 yet. Its user-friendly features and great application selection among numerous other features make it an easy choice. The iPad 2 is fun, entertaining, productive, easy to use and best of all it has no complications whatsoever, buy it and start using it, nothing more.
Here is one another iPad 2 video: