My X seems louder than my 7. I used to listen to music in the shower at 2 notches below full volume. Now I feel like 3 or 4 below max is about the same.
And I used to always have my ringer at max volume, always. Now I feel like max is too loud, so I have it a few notches below max. (Been using the same ringtone since the old Razr flip phones, so I’m very familiar with it.)