Buy the iPhone XS for Stereo Sound
If you like to listen to music or watch content on your phone without headphones, consider buying the iPhone XS or iPhone XS Max.
The iPhone Xs and iPhone Xs Max both support stereo sound which is a great feature to have when you don't want to use headphones or connect your device to a Bluetooth speaker for great sound.
Sound is louder and crisper than it is on the iPhone X and it's a much better experience than what you'll get from an iPhone 8 or an older iPhone device.
It's a small upgrade, but it's a good one.