I have this Helix for testing purposes from my company and I disagree with your rating.
First the noise is really loud... in an office environment, you can hear there is some noise, but when alone, like from home or in the evening, the fan noise is unbearable!...
Also design wise they have a lot of improvements to make, and why the hell a glossy screen!?...
You can't really carry it with one hand even though it's light, as the weight is not balanced and you cannot grab it only from the keyboard or from the screen... result you have to close it... and to open it you need both hands! the lid is so heavy compared to the keyboard that the keyboard will follow the lid and you need to pull them apart... what a design ... ! :( the headphone plug is on the top right, which is really a strange placement, there is no Kensington lock, and the battery life is really not extra... 6hours something in a real working condition... my T520 was doing better...
Anyway there are some good ideas, but it's not quite there yet, especially for the price! I'm sure a surface 2 Pro benefitting from the Haswell procs are better.
This review is much more "honest" in my opinion:
http://www.slashgear.com/lenovo-thinkpad-helix-review-04288958/