do I move to android

[Android Central Question]

my big thing at the moment is how small the battery is on my iPhone 6, and I am now at a stage where I am looking to buy a new phone. This phone should last me about 3 or 4 years so I NEED the battery to be good, or at least be cheap to replace. I have my eye on the Samsung Galaxy note 9, HOWEVER because I have a Apple Watch, MacBook Air, iMac and iPhone, I just think it will be easier to get a iPhone X (the XS is stupidly overpriced in my head, hence the downgrade) let me know what you think I should do and if you are in the same situation? thanks