+ huge battery.
Honestly, anything with the Snapdragon 800 or better is a winner. I'm slightly jealous when I see a Note 3 walk by, but I love the G2...still waiting for KitKat (+1 for Nexus).
I feel the Samsung S# are in the same boat now as the iPhones where you're already feeling outdated. I just saw a Galaxy S4 commercial this week and the S5 is coming out. My Dad just got the S3 a couple of months ago! I don't even want to point out he's already 2 generations old, but he finally ditched his Blackberry so anything's better.
I read tech news every day, but I haven't kept up in reading the leaks if there's going to be 2 or more screen size options. Some people want bigger screens, but if they went large-only, that'll scare off a lot of iPhone fans as well.