Love my Lumia 920 but...

It's about time for a change. I tried out a mid-range android device as a secondary phone for a short stint, but I was annoyed by the lag on android 4.1 on an OK processor. I'd love to get the 1020, but I feel like that's too much of the same. Maybe I could get an iPhone 4s as a secondary phone? I'd like to get a new WP device when the WP8.1 wave of harware comes out in spring, so this is not a long term investment. I love WP and my 920, but I need something else in my life right now.

Advice, Tribe?