Which phone is better?

[Jack]

I would personally recommend the Nokia Lumia 920.

It takes the best low-light photos of any smartphone.
It has Nokia Music - no ads, no sign-up, no subscription; listen to as many music mixes as you want. Download mixes to your phone and listen offline.
It has Facebook and Twitter built in - plus the home screen is much more personal and customisable than the iPhone: to keep the people, apps and information you love close.
It has a really slick design, and comes in amazing colours; it is quite a bit heavier than the iPhone 5 though.

The main compromise for the Lumia is the amount of apps available - there simply aren't as many as on your iPhone.