Seems this is a love it or hate it phone lol
Do you like large phones with large screens? Get the XS Max

If you are skeptical maybe put your sim in one at the store if they can allow you and compare how it is with your current iPhone.
For me I have had no signal issues and have enjoyed good coverage even in a house that has known dead spots for all phones, my XS Max has done a good job of keeping a signal as long as it could in a dead spot.
If you are lot comfortable with what you are reading then rather wait for the XI Max.