I am about to do upgrade from my Lumia 820, and I am in dilemma. I can get new Nokia Lumia 925 for 260 USD, or new Nokia Lumia 830 for 460 USD. What do you guys think? I was hoping there would be Nokia Lumia dual SIM with specs of Lumia 830, but since there isn't, I will no longer wait for proper dual SIM windows phone.