I'll give a long term review of my 6P if it helps your buying decision. Two months down the road, I still like my 6P. Every good thing said about it in every review is true, but I still have a few quibbles:
- It's solidly built, but feels fragile to me. Maybe it's the slippery metal casing, or that it's absurdly thin for its frontal surface area, but I don't feel comfortable handling it outside of home at all without a case. I'm sure it's plenty strong though.
- Wish it had an SD slot. 64GB is enough for me, but more storage never hurts.
- Wish it had a removable battery, although nobody gives you one nowadays except for LG. Too many good phones out there to pass on just because it doesn't have one feature I want.
- Battery life: It's inconsistent. I generally get 5ish hours SOT over a day running the Franco kernel, but sometimes it can't even get to 3 and sometimes it'll Jesus its way up to 6, on the same usage. Not a deal breaker, but it maddens my OCD a little. I also noticed this same behavior before I rooted my phone, albeit with an hour less SOT. My signal strength is yellow (not good) where I live, although it's green where I go to school and work.
- Size: I can manage it, but it'd be even better if it was a wee bit smaller, maybe 5.3" to 5.5". Despite it being narrower than my Droid Turbo 2, it's harder to handle in one hand because it's much taller and a bit top heavy. The giant bezel on the bottom, thin profile, and the slipperiness of the metal casing don't help either. It's also too tall. If my pockets are even normal size, it jabs me when I sit down. Also, I'm an avid cyclist, and it sticks out the top of my jersey pockets.
Otherwise everything else is... literally perfect. Nothing else to complain about. You can't go wrong with this phone if you're not a ruggedly outdoorsy type, not clumsy, and can handle the size. If it sounds like I was down on this phone, it's only because I might not be the right type of person for it. I love spending time in the backcountry and cycling, so the durability, size, and water resistance of my old Droid Turbo 2 make it a better fit for me. But my 6P keeps singing its siren song of stock Android, wonderful fingerprint sensor, bootloader unlock/root, beautiful design, excellent camera, and lack of bloatware that keeps me from selling it. That the 6P can keep someone who's not the best fit for it such as me captivated with it speaks a lot to how good a device it is.
Only wait for the next Nexus if you really care about having the latest and greatest (although there's less of an argument for that with Nexuses due to software updates) or if one of its shortcomings are really a dealbreaker for you. Otherwise, you'll be happy with a 6P and you'll be able to get it cheaper to boot, since it's on sale now for $50 off in a lot of places.