I had originally planned on getting an iPX but I'm just not sold on the face recognition thing. I think it will work just fine but feel like there will be a lot of circumstances where a fingerprint sensor is more convenient (e.g. when phone is mounted in the car and you want to unlock it to start GPS - do I do the Detroit lean???). I like the screen size vs device size, the notch doesn't bother me either. I wish they would've offered a 128GB version. 64 is too small and 256 is too big (for me).
Though I have an Apple watch, iPad, Apple TV, etc, for $1200 I just don't see the value proposition when I can get an S8+ for < $800 (several deals going on) and have mostly better hardware (iPX has a better processor). Financially, it's no issue at all for me but that doesn't mean I should waste my $.
That said, I see a lot of people banging on Apple for just now having wireless charging and face recognition yet no headphone jack or expandable storage - Take a look at Google's new flagship phone. Seems a lot of those jabs at Apple should be directed there as well....they don't even have wireless charging!