I had an S6 that I upgraded to the 6p from, then moved to the 5X. The 6p was way too big. The 5X is perfect.
I would say the first thing you should do is remember you have a nexus device, you can do almost anything you want with it. Root it, add another ROM (Pure Nexus recommended), then try another, and another. Read the threads here as there are a lot of people here smarter than me that can help beyond what I an saying.
I would also recommend the Ringke Slim case. Beautiful design.
https://www.amazon.com/gp/aw/d/B014RS5C0I/ref=yo_ii_img?ie=UTF8&psc=1
Being this, enjoy the phone!
Sent from my bullhead using XDA Labs
---------- Post added at 02:09 PM ---------- Previous post was at 02:05 PM ----------
Before I forget, I love using Wug's Toolkit to root and install a custom recovery. Makes everything super easy to do. You can find it in the original development forum under it's own thread.
Others may say different, but each to their own I guess. This one is just the easiest way for me since I have used it for many Nexus devices in the past.
Sent from my bullhead using XDA Labs