While I liked Win 7 more, I didn't mind Win 8.1. But convergence won't happen. Everyone is quick to forget that the devices are actually in different physical forms when interacting with them.
I think Gnome 3 is the most successful, because their utilities and first party apps have the right kind of compromise while not trying to enforce their view on other software workflow. iPad OS would have been great too, if they went for a free floating windows management and some widget redesign instead of the awkward stage manager.
The tiles thing that Microsoft tried for one of the iterations of Windows Phone was actually quite nice, I forget the OS that kind of went with that, but - they never doubled down on it and abandoned that phone OS soon afterwards.
I think Gnome 3 is the most successful, because their utilities and first party apps have the right kind of compromise while not trying to enforce their view on other software workflow. iPad OS would have been great too, if they went for a free floating windows management and some widget redesign instead of the awkward stage manager.