Yup after using Windowsphone since the Lumia 800, 900,920,925 & 1520. Not forgetting converting quite a few of my friends from Android to Windowsphone, with heavy heart I picked up a Sony Xperia Z5 Premium due to battery and camera as compared to my 1520.
The final straw is waiting for a local 950Xl set Wait is too long till one day I dropped my 1520 and cracked the screen. Bought a 2nd Hand 930 with faulty camera button previous owner didn't inform and I forgot to check) but MS Service centre say I needed to pay $250 to replace the camera button. Forget it, Im sorry Im a big supporter of Nokia. But Ive had enough plus can't find new Lumia's here. Gave up and despite the initial sufferings of learning a new OS, I began to really enjoy it. Sony Xperia Z5 Premium. Better camera, Better Screen, faster and so far better battery life. Cheers and hopefully will be back once they've ironed out all the issues and if MS want to be in the phone business.
Most imp for me is to have a phone that just works. Im a heavy user of it at work. Too many bugs.