Before I switched to the Moto X I picked up a pristine Nokia 820 off Ebay for $39 just to try a Windows Phone.
The 820 is beautiful, smooth, responsive and I love the fit and finish. It seems to be a very well made phone. It also can do wireless charging with the wireless charging back that adds less than a mm to the thickness.
HOWEVER...... it had very uneven battery life in standby. Even with everything turned off and not synching, one day it would do about 1.5%/hour and the next it would do 3%/hour. I never found the reason and worse, Windows phones are VERY locked down and do not allow access to any sort of in depth system monitoring so it is very difficult to impossible to figure out what just killed your battery.
The only thing I miss about it is that out of the box, it offered to read texts over bluetooth when in the car. This did not require any sort of program and did not require that GPS be enabled (to determine if I was driving). I have never been able to get my Moto X to do that.
So I switched to the Moto X and find it and Android to be a breath of fresh air. The Moto X in standby (with no synching) can do about 1%/hour and it is totally consistent. And Android is FAR more customizable than Windows Phone is.