Choosing a tablet (IPS 10+ inches, 64+ Gb, USB ports, 10+ hrs battery life, <1 kg)

[L'enFer]

I just saw thread about Acer W700 and was inspired to create this topic.

So, what I need is specified in the thread title. Actually, I'd also like this tablet to have a detachable keyboard.

I suppose, someone will suggest me to grab an ultrabook, but the point is that I don't really need it. Besides, vendors announced some products that seem to have all the specs I want.

I had a Samsung NC10 netbook and it was enough (except the battery life time) for my tasks when I had no access to my desktop. So, now I need a portable device to replace it. That's why I want the tablet to have USB-ports, capacious storage and a keyboard. The most common tasks were: web-surfing, watching 720p movies, photos backup, playing light games.

At the moment my attention is concentrated on Lenovo Thinkpad Tablet 2 (currently page doesn't open). The only concern is battery time life. It's declared to be up to 10 hours, but I want to know the real figures after real tests.

I also looked at Samsung ATIV Smart PC, but I don't like that keyboard doesn't have an additional battery.

Acer Iconia W700 seems to be very thick with the doc-station.

What else could be an option for me?