I was quite happy to converge tablet and ultrabook into one device and did so at first with the Asus T100 (Atom Z3740, 2gb RAM, 64gb SSD, $300) and then with an original Surface Pro. Before that, I had been traveling with a 12" ultrabook (by no means a heavy-weight) and an Asus T300 android tablet. I couldn't edit powerpoint slides on the Android tablet and be confident the formatting would come through when presented. I also couldn't do quick edits to macro-heavy excel files. The tablet became for pure consumption (video, games, light email) and the laptop for editing/creation (powerpoint, excel, heavy email).

Between the two devices I had ~4.5lb of device plus chargers. Now I have ~2lb of device and a single charger that is also my phone charger.

My ONLY complaint with the Asus T100 was the chintzy build quality. Performance and battery were both perfectly acceptable and it was capable of being my only device for travel. I upgraded to the Surface Pro for better build quality and performance, but at the cost of battery life. I did end up adding a Power Cover for long flights and long days of meetings... with a Pro 2 or Pro 3 I wouldn't even need that.

To me, the PERFECT device would be something with the internals of the Asus T100 (Atom Z3740, 2gb RAM, 64gb SSD) and the form-factor/build-quality of the Surface RT... call it the "Surface Home". It would have all the power and battery I would need in a form-factor and build-quality I want and the ability to run full Windows apps, create and consume content, and be perfectly portable. I would GLADLY pay the current Surface 2 MSRP ($499 for 64gb) for this device... that's s $200 premium over the Asus T100 (which includes keyboard and office home/student) just for the build quality and form factor. The margin should exist for MS to sell such a device, though it would likely cannibalize a lot from the Surface Pro 3 for people who don't need the size, power, and resolution. THAT is the device that would signal the end of RT.