Should I switch from Galaxy Nexus to iPhone 5s?

I have had a Galaxy Nexus for about 13 months now, and it's holding up just fine. Jelly Bean is great, and the Android platform delivers all of my needs. However, I really feel like it would be to have something new and try out the iPhone for awhile. In your guy's opinion, do you think it would be a good decision to switch to the iPhone 5s coming from a Galaxy Nexus? Can someone please provide a Pros and Cons list also? Thanks guys!