If you're looking for a new Ultrabook with a touch screen, you could do worse than the ASUS VivoBook S400CA. It's relatively light and compact, and while we would have preferred a resolution higher than 1366x768, ASUS isn't pricing this as a high-end model. It also lasts a pretty long time on a single battery charge.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips