Re: long time android user to swap to windows
This is coming from someone who moved to Windows Phone and later moved back.
I tried out Windows Phone for around 8 months on the entry level Lumia 520 and I can say that it was a solid experience. Later I had the option to move to a 2013 flagship of Nokia or a flagship of Google, and I chose the later.
Primarily because Android suited me more, I am a power user who needs to get more work done faster also I need more functional applications along with better gaming titles, oh and I love rooting my device once it has surpassed it's update cycle.
But Windows Phone can be the OS for you, depending on what kind of user you are, the live tiles are beautiful and so are many of the apps, most of the essential apps are there and you have quality replacements for apps that aren't there. But it definitely isn't the OS for mobile gaming.
Apart from that, the 830 is a great device and my only concern was the price, if you are getting it at a good price then by all means go for it.