I am another one who just bought an N6 (off Amazon) that was barely used. Paid about $210, but it didn't come with the turbo charger, just a craptastic chinese standard wall wart. Ordered the Turbo charger for $15 more, no biggie.
I see this as a major upgrade from my previous whip, an LG G3, which was still pretty damn decent.
The screen, memory and performance just blew me away as soon as I fired it up. I am still working out the kinks with battery life and mounting it in my car nicely, but I am loving this beast. It is butter smooth as is and only unlocked bootloader and got root and TWRP installed.
I cannot see paying stupid money (read: Apple level) for a phone and going with LAST year's flagships seems to be a hot trend that works for me. I expect to get plenty of use out of this until something comes along that is a significant improvement over it.