I agree with Harrie, however there are 2 questions still left unanswered. What do you mostly do with your phone and do you plan on upgrading to Windows 10 Mobile?
People tend to ask me often what phone should they switch to or whats the best phone on th market or is Android better than iPhone (we all know the right answer to that question right?). I always ask them simply, what do you do with your phone?
If youre a techie, you want to be able to "hack" your phone or you're a "prosumer" you obviously want something with a little more power to it. However, if you simply check email, facebook, twitter, etc... then by all means simple replace your 920 with another one through eBay or something or even the 630 (cant believe how cheap it is).
I was at the Microsoft build event last year and won a 1520 as a developers prize, and although it is a beast of a device, I went back to my 830. For me it was question of power and portability plus a decent camera.
If you want a powerful device, don't mind spending the money and plan on upgrading to 10 then I would say wait it out, buy a cheap 630 or even a 520 (I bought 3 of em for $25 each on Amazon) and wait till the flagships come out this summer.
I am personally holing on to my 830 until that 940 comes out
