Should i get the samsung Galaxy SIII or the Nokia Lumia 920?

Since watching the disappointing iphone 5 event i am deciding the jump ship from the iOS crowd for a bit and go back to either the windows phone crowd or the android crowd, i like my apps but i do love the ease of use with the windows phone platform, just wanting some opinions on wether to get the nokia 920 or the S3?

I live in the UK too so looking for something 4g compatible too! (im a data fiend)

Thanks guys!