Just pulled the trigger on X3 and am considering upgrading to Windows 8.1 for touch control. Now that this post has had some time to age, do you guys have any additional thoughts? I'm wondering whether the extra control and workflow enhancements are worth spending $400-$500 for a touchscreen monitor and Windows 8.1.

Sorry for resurrecting this thread; I figured it would be preferable to starting a duplicate!

Thanks everybody. :]

This wont help but I purposely bought a new computer at the beginning of the year with Windows 8.1 BECAUSE I eventually wanted to move to a touch-screen monitor.  I haven't yet.  But, like you, I'm very interested in folks who ARE using them.  I'm also hoping the next release of Sonar will include some deep advancements in this technology.