Lumia 950, hour six.
I picked up my 950 on the way home from San Jose today. Initial reactions are a bit mixed. I really loved the weight and feel of the 920, and the 950 does not mimic it in any way. It's much lighter, way more plasticky. On the upside (meh, maybe), a big part of the reason is that the back is removable and so is the battery. It's essentially unremarkable, really, which I don't mind one bit. I don't like flashy electronics.
I've been using "Insider" Windows 10 on my 920 for a while, so the 950 experience doesn't feel special. I will say the little polish added between RCs and production are nice - things that seemed a little ragged (mail setup comes to mind) are back to the WP8 level of excellence. Everything is fast, easy to read, and laid out in a sensible way. The backup/restore process was painless and much faster than the iTunes process... WP does not image the flash, it just backs up settings so there is a ton of data that doesn't need to get sent around. Made moving phones quite nice.
I haven't played with it much... I mean, I don't play with phones much. I've sent a ton of emails and done some web surfing, but that's it so far. I'm probably not a good candidate to espouse the virtues of a new product. But, I like what 10 promises when supported by not three year old hardware, and I am looking forward to the new camera.
TL;DR: Is the 950 going to change my life? No. Am I happy I went for it? Very.