is there a good reason to upgrade to x8 from x7?

Can you please list the reasons I should consider upgrading from x8 from x7?

I am using a Surface Pro 3 from my main machine.

I guess they kicked me out of my syncing ability?

Is that the main incentive to upgrade?

What other features are there?

You may want to have a look at this What’s New in EndNote X8 video: