Comment My experience with ULV, i7 ULV, Core M's (Score 1) 85
I just lived this - I started with a Dell Venue Pro 11 i5, TDP 11.5W in plastic case. It was a throttling and heat nightmare, slow, sluggish, very buggy graphics drivers.
Next up was the Yoga 3 Pro in the review. Saw the same performance oddities in the review plus buggy graphics (frequent crashes with video, flash, very poor windowed video performance) and poor battery life despite removing all bloatware.
Moved to a Asus Zenbook UX305 in the review, Signature Model sold by Microsoft. Felt much faster in use than Yoga 3. In my usage, twice the battery of life or more of Yoga 3. Very light, sturdy and fast, great value. But also buggy graphic problems which seems to be Intel's Core M variant of the 5500 drivers. That plus I just missed backlight on keyboard, returned (but still a worthy model).
HP Spectre x360. This unit is a bit heavier but in my view is the winner. Fast, excellent battery life, much better graphics driver, nicest keyboard in my experience. Due to a shipping error got the QuadHD screen, but surprised that unlike Yoga 3 Pro, battery life does not take much of hit and performance is much better. Really like it and it's a keeper. It feels fast enough if you want to do some Photoshop or medium editing but light and sturdy enough that it's close to Macbook Air functionality (3.26 lbs vs. 2.96). Nice range of models from non-Touch. I