As much as I have enjoyed using my 15 Pro Max, and it is still a great iPhone, I recently took delivery of my new Air and have to say I have been blown away with the build quality of this new iPhone and love that it is the thinnest and lightest iPhone I have ever had. I had the 6S and and iPhone X and have to say this new Air is amazing and I like that it also has the A19 Pro processor so performance of this iPhone so it has some of the high end attributes of the Pro line but yet remain in it's own unique "swim lane".
It is not the perfect iPhone but for my uses, more than adequately lives up to what I need an iPhone for. I love the single camera as it takes amazing quality pictures, very surprised by this iPhone even after having it a week.