Don't know what your price range is, but Colleen is very happy with the Lenovo Yoga 2 Pro ultrabook we just bought. more than 7-hour battery life, 3 pounds, 3200x1800-pixel multi-touchscreen, becomes a tablet by folding the screen under, can write on it with your finger to take notes & it does handwriting recognition very well, very good keyboard,
very highly reviewed.
The construction is up to Lenovo standards -- very solid. The case has a coating that's kind of rubbery-feeling so it's very easy to grip one-handed in tablet mode.
The screen only 13.3 inches (on the other hand, it's a 13-inch tablet), but is incredibly crisp and easy to read, with very wide and high dispersal angles. Putting 2 Word documents side-by-side is quite readable, even with our old eyes.
It has 256gB SSD instead of a disk drive, disk operations are extremely fast.
On the negative side, there is no optical drive (we got a USB DVD-ROM for $25) and only a micro-HDMI video port (we bought a VGA adapter for use with her external monitor and for presentations with a video projector for $20). Also, if Chrome is your browser of choice, be aware it's not optimized for hi-pixel-count screens and web pages often look tiny. Firefox and IE 11 work fine.
We got the version with the i7 CPU Colleen. Lenovo claims 9 hours battery life for the i5 version, which will be more than plenty for most people. (If you don't know why you would need an i7, you don't need one ;^) If you go to Post original url/YogaTwo you will find the i5 for $999 and the i7 for 1099, which is 20% less than we paid. They also have MS Office 2013 Home & Student as an add-on for $120.
Oh, the power brick is tiny and doesn't add much weight when you're traveling. And it charges the Yoga in less than 2 hours.
Finally, Colleen thinks the tangerine color is really cool.