If you prefer your phone to be like the Global version than you flash to Glboal ROM. But do note that in order to flash ROMS. You need to unlock your bootloader and with Global ROM, Google Pay might not work if you're using it. As for me, I don't use Google Pay. And with unlocked bootloader, apps like Netflix need to be sideloaded as well when you use Global ROM. With EU ROM, it is based on China ROM but without any bloatware and ads. And Google SafetyNet passes too. It works perfectly as though the bootloader is locked. So you won't have problems using Google Pay or downloading Netflix and other apps from the Play Store...