I moved to Mi3 from Lumia 920 few months back. It was a good phone,VFM, speedy and very sturdy built but still there was something lacking. I always wanted a good camera in my phone and everything else comes second for me. Moreover the gaming abilities of Mi3 didn't really matter much for me as I just play games on PS4. Also, i was missing the double tap to unlock feature of Lumia desperately. All these things combined made me sell off Mi3 within 2 months of usage. I forgot to mention the battery life, on stock miui5, the battery life is absolutely phenomenal. I'm a heavy user and i used to get through one and half days without charging easily. So i bought a lumia once again, 1020 this time, and boy the camera. :O This thing blows every other phone camera outta water and due to windows OS, it was pretty fast despite having just a dual core processor. Since then i have no qualms about my purchase.
Now i see oneplus1 coming to india and it look extremely attractive. I'm very inclined to get it as my second phone due to its battery life, bigger screen and it has double tap to unlock too. Lets see if i get a invite tomorrow or not. I've registered from 5 accounts though