My Lumia 925 is an upgrade from my Lumia 920. I purchased it due to my affinity towards Windows Phone, sleek looks and fluid interface with no lag.

You can read full review by GSMArena.

The screen has changed from LCD to OLED and this now looks awesome. Videos specially look very nice due to deep blacks.

Battery life is little improved compared to Lumia 920 due to OLED screen. It still depends on how you use the phone though.

I have also updated the list of apps I use with my Lumia now.