I certainly enjoy my Lumia 925, but I'm finding it's slowing down and the battery is getting worse, and that's on 8.1, the last time I tried the Win10 insider preview it was a laggy mess. Unfortunately though I'm in university and can't afford to get a new phone anytime soon, so my only hope is contests like these! I'd love to have the larger screen for games, movies and reading articles (big pastime of mine). If I won I'd get the Continuum Dock and hook it up to my tv so I could just come home, plug in and have an instant smart tv. The iris scanner would also be really nice, as I like to have my phone locked, but it's far too easy for people to see me enter my pin, so a biometric lock would be great. I really like the Microsoft ecosystem, using a W10 desktop at home, a SP1 for school and I even got a Band off eBay because they weren't sold in Canada, so I'd like to keep my phone running Windows as well.