So after using my Lumia 635 for 8 weeks straight, I have come to the following conclusion. MSFT really needs to make a Lumia that would be similar to the Z3C. Bigger battery, better screen, screen size is actually perfect, camera button, wireless charging, better main camera with flash and FFC in the same form factor as the 635 and about the same weight. I can see myself using that on a daily basis....wait a minute, that is why I used the Lumia 810 for 12 months straight as a daily driver
As much as I like the Lumia 830, I still think it is a tad too big for my personal taste. I will post my impressions of the Z3C next week and also the 2014 Moto X.