Help me choose my next pen-enabled hybrid PC

Which Hybrid should I go for next?

Hey there Tribe. I've decided it's time for me to get a new PC, moving on from my Samsung ATIV Smart PC Pro. As an IT student and part-time web consultant, I love the form factor and now must keep all my notes in OneNote with ink, but I need to get something with a slightly bigger and more flexible screen before my eyes bulge out and more battery life would be good.

I've narrowed down my choice to two options. The Lenovo ThinkPad Yoga or the Sony Vaio Flip 15 (or Fit 15A in some markets, like mine in Singapore). If you've used and own one of these devices, I'd like to know what do you think of them. Or if you don't own either, what do you think of the devices?

Lenovo ThinkPad Yoga

Specs in the SKU:

  • i7 Processor (can't remember which), 8GB RAM, 256GB SSD
  • 12.5 inch IPS Full HD glossy touchscreen with Wacom pen tech
  • Mini HDMI, 2x USB 3.0, Adequate ~ 6.5 hrs battery.

The ThinkPad Yoga might be the more natural upgrade for me, I appreciate that it also uses Wacom tech like the ATIV, so I can use my existing Surface Pen that I've grown onto when using my ATIV. Battery life seems to be an improvement too over my existing 2-3 hours on the ATIV.

However, the screen size still remains about the same, which is a bummer. I would think something closer to 13.3 inches would be better. There are some specs that it loses out to in the Vaio Flip 15.

Also, screw you mini HDMI. Now I need to get more freaking adapters.

Sony Vaio Flip 15

Specs in the SKU:

  • i7 Processor (4500U, 1.7GHz), 8GB RAM, 1TB 5400rpm HDD + 16 GB flash cache, switchable dedicated graphics
  • 15.5 inch TFT Full HD glossy touchscreen with N-Trig pen tech
  • Full size HDMI, 3x USB 3.0, Surprising battery life approaching 6 hours on integrated graphics

The Flip 15 seems to be a great choice too. I like the form factor, and having the NVIDIA® GeForce® GT 735M as a switchable option seems to make this a more "do anything machine", especially when it comes to playing the games I have on Steam on occasion. The bigger screen, although less resolution dense, will be a godsend for my eyes too.

I'm willing to make the tradeoffs in terms of portability, and likely not being able to use this thing on the train while standing, plus battery life doesn't seem to take much of a hit despite the spec bump (can actual owners confirm this for me?). At the same price point and looking at these pluses, the Flip 15 is seemingly the better choice.

There are only two things I worry about. First is that N-Trig pen, trying out in store yields a wildly different experience from a Wacom stylus, especially the palm rejection. Are there any guys who moved from Wacom to N-Trig and found it ok?

Second is the supposed sell off of the Vaio line from Sony. I'm worried this device won't get the proper support when Windows 8.1 Update and Windows 9 comes out... Knowing how non-enterprise companies sometimes don't take updating drivers and software seriously, this comes as a worry for me as an early adopter.

Which do you think is a better choice?

Tribe, let me know what you think of either devices, especially if you've used one of them. Right now I'm very 50-50. Thanks!