I own an Apple iPhone X and a ZTE Axon 7. I would prefer to have a dual SIM iPhone, but don't want to empower my carrier too much. I have ATT's international unlimited for data. I love Apple's LTE band support. I love a lot of things about the iPhone. I prefer Apple Pay to Android Pay. I prefer the single secure password vault to the app-by-app approach I see in Android.
I don't love how I can't change some of the default apps for third party equivalents. I prefer Android Auto to Car Play and more relevant to this discussion, I like the apps that are country aware and will automatically change dialer settings when I cross a border. I prefer how Android gives the power to me rather than my carrier to make various settings. For example, with ATT I can't play a video with a lightening cable to an HDMI set because ATT has locked out tethering because of my data plan. Are those settings going to lock me out even if I switch data to other SIM in slot 1. I would also prefer to SIM slots to an ESIM, but would really like both.
At least on my Axon, I hate the fact that I can't stream most music through my USB and have to use inferior Bluetooth. My iPhone never seems to lockup. I have been frustrated at times with my Axon. While it is normally not a big deal, when driving it can be a huge deal.
When Apple announced the Xs, I was about to preorder it. I've since decided to wait and see how the implementation goes.