Win8.1 is fine, but being able to set reminders with Cortana, getting back Start Menu jump lists, being able to use WinMail in a windowed version, and getting some eyeball friendly transparency effects all are pretty appealing to me. And being able to use CTRL-V in the command prompt, let's not forget that! I'm pretty happy with mine too, but out of the long list of features and tweaks I do look forward to the improved settings menu, dictation anywhere, local file search, being able to attach any file to emails, and smart dialing like in Windows Mobile 6.5. And personally, but I realize this is not for everyone: to me bluetooth keyboard and mouse support are exciting. I like the idea of sticking the new MS bluetooth keyboard in Mesosphere-sized cargo pants and being able to do serious editing in a full-featured Word app on my 1520 in a pinch.