I loved and love the N9, it's a beautiful device with a great user experience; and if you've used a gesture-based interface, you can't go back to the Android/IOS mess. However, I recently switched from N9 to Jolla. Mostly because I want to support this company as I'm afraid it's the last chance for a somewhat open alternative. But also because the battery on my N9 was showing its age.

Overall, SailfishOS is very similar in user experience to the N9. The Jolla is faster, lighter, has 4G and its Android compatibility means you have no missing apps. The interface is smooth and beautiful, and at least as intuitive as the N9's. It's not expensive with the current price drop. What I miss from the N9 is the screen (I used it as night clock) and the Drive application. Also, the N9 was the perfect size for me (though the Jolla is far from a big phone by today's standards). But when I now use the N9, I find it heavy and very slow.