not pregnancy related sorry

So
Hey guys, I am eligible for an update on my phone. I currently have a iPhone6 with only 16gb which is not enough storage space at all! especially now that I have my son, all I want to do is snap pics of him. Now for the upgrade Its $400 for the iphone7 with 32gb orrrr I can get iPhone6s with 128gb which is massive amounts of storage. I need opinions! The 7 is nice because it's water resistant and the camera is a bit better (but that's it) plus you cannot use reguler headphones which I find annoying. They are both $400 (candian) which one should I get ?!😬