So, last weekend I bought myself an 830 purely to try W10. I run a L930 and also a L735 so the technical preview was tantalisingly out of reach. My shiny pre-owned 830 arrived yesterday (complete with all 4 battery covers - very nice). I duly installed windows 10 and as expected, twas buggy as hell but I did like the new home screen layout etc. Anyway, I flipped the 830 back to 8.1 earlier today and have fallen in love with it. My L930 is now heading for ebay. Great phone but relatively weak battery life and mildly better performance in operation (I'm not a gamer or pro photographer) mean there is no point in me keeping it anymore. The 830 is lighter, thinner, has a much better battery life, expandable storage and swappable backs. It feels great in the hand, is buttery smooth and looks...well awesome. I love this phone!