I got my V20 activated yesterday. Coming off of two N7's which I really liked.
I'm definitely impressed with the overall build quality and fit and finish of the V20. It's a nice looking phone and feels good in hand. While the display might not be at the technical level of the Super AMOLED N7 screen, its still very nice and I have no concerns at all. I haven't customized the second screen yet, but it seems like a great feature.
We'll see how battery life is with screen on time, but is rest state it seems to barely sip any power. This is likely related to software but it's and improvement over what I was seeing with N7.
The Quad DAC is the real deal. Listening with my Oppo PM-3s the sound quality was excellent. Toggling the DAC on and off makes a very big difference. Coupled with my 256gb memory card, it makes for a really nice portable solution when I don't want to carry my Fiio X5 and HA-2 headphone amp.
Now I just need to find a good screen protector. The edges are slightly curved and the full screen hard glass protector I put on doesn't seat properly at the edges. I may need to go with a non hard glass protector but interested in hearing what others hard success with.