I have tested Acer Iconia, Asus Transformer, HTC Flyer and Motorola Xoom, at last I chose iPad 2. I found the iPad price is cheaper if compare to HTC and Motorola, second, iOS is much stable OS for mobile device, tested the android, and I managed to make it hanged and have to restart, while iOS, can't even have to chance to slow it down, it just so smooth and responsive, very suitable for education and business purpose. But if you like to play with the tweak, flash ROM, then Andriod will be your only choice.

Totally agree!!!