poking my head above the parapet...
I had iPhones for 3 or 4 years, but this time (out of a sense of perversity probably) thought I'd give Nokia a try...Nokia mark you, not Windows - that kind of comes as a side effect of buying Nokia.
I've got a Lumia 925, fantastic hardware, not plasticy, right amount of solidity and heft. Fantastic camera and Nokia smartcam software. Much better voice call quality than an iPhone.
WP8 isn't bad either - there are some features missing, it's a bit like iOS3 or 4 in the sense that it feels a bit unfinished, but I haven't much suffered from a lack of apps, most of what I actually use (as opposed to all the iOS apps I downloaded and only used once) I've got. MS need to move the Bing button though (or let us turn it off) is currently in just the wrong place for single-handed phone use, gets hit by the pad of my thumb when I'm typing one-handed.
Is the Lumia handset as good as an iPhone or Galaxy? Definitely
Is WP8 as good as iOS or Android?...maybe not yet, but WP9 might get closer.
All in all - I like it, I'll probably keep it....for a while