If you are looking for something between XR and XS Max, Apple iPhone XS is the choice. It has features similar to XS Max. But the battery performance, display size and quality are a little lower. Performance, body material and other features are same as iPhone XS Max.
If you don’t want that extra large 6.5-inch display, can be satisfied with slightly lower battery backup and interested in the lower-priced option, iPhone XS is surely the better option for you.