I have a 2016 (essentially the same thing?) base model 15". Coming from a base 2010 13" MBP, obviously a huge upgrade. That being said, I do have a few complaints:
-Performance isn't what I personally think it should be. I don't use the machine for anything too intense, and I find it to lag in the strangest of times (beach ball and all...)
-I take care of my machines, and already have noticed some light scratching in the finish and some a small indent on the side of the lid (happened first few weeks, no idea how it got there.) I guess I worry about quality in general.
-Battery life should really be a lot better.
That being said, there are a lot of positives for me:
-Display is amazing
-Audio quality is impressive
-I really like the touch bar a lot, and find it super useful
-I like the keyboard
-I've grown to like USB-C and not really miss the "missing" ports
-It's a beautiful machine overall
I think it's a great machine, just a bit pricey for what it is.