I have a Lumia 920 and am thinking of adding a line to my ATT account. I thought the 1520 might be a good supplemental phone to have due to the larger screen, but I am also considering the 1020 to have the killer camera and similar portability. I know this is primarily a personal preference issue, but I am specifically seeking advice from those that have two phones and what their experience has been because it will be a new thing for me. Thank you!