Which Tablet?

[honeybee]

Never thought I would be posting this, but there it goes!

I am looking for a tablet. It will be mainly used for browsing the net and checking emails (Google, Yahoo and so on). It needs to be fast, should have 3G connectivity (of course with a SIM card), should have at least one USB port where I can connect an external keyboard if required. It also should allow me to create/open/edit/manage MS Office documents.

It should be able to do all of this pretty fast. It should be portable, ie. can be carried in a small bag. At the same time the screen should be big enough to not strain the eyes (Need to be able to clearly see about 20/25 emails in one screen). Expected battery life is around 4 hours at least.

Why I am not considering a netbook or a laptop is it's too bulky, the boot times are slower compared to a tablet and there won't be a touch screen.

It seems mostly the tablet will run Android (rest are too pricey or too restrictivce), so I would also like to know if it makes any particular difference if I go for the Honeycomb or the Ice Cream Sandwich.

Price point is US$ 400 or below.

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