I have the 1020, and am content. I am planning to get my wife the 1520, and then sample it. She is upgrading from the iPhone 4S, and wants a huge screen. I may get the 2520, which I can add to my ATT account without a voice plan for $10 monthly...
I'm going to do it. I love my Lumia 1020, but I want a bigger screen. I'm willing to trade a little bit of camera performance for the much larger screen. I used to have a galaxy note and I LOVED the large screen. Since a large screen is going to be available for my favorite phone OS, it just makes too much sense.