In Sound settings under Equaliser, set it to custom and turn all the EQ bands down 2 notches. This is a trick from the S9 days too which improves dynamic range of the speakers. I don't use Dolby Atmos as it compresses the sound and makes the 3D effect a bit weird sounding, just doens't sound natural. Maybe it's good for gaming but certainly not for videos/music.
Adapt Sound is on as always and tuned for my JayBirds which makes all the difference at further improving the difference between high/mid/low detail.
S10e does feel a good bit smaller in the hand but the screen is plenty big. I have a J6 issued from work and I was convinced it had a bigger screen (it's certainly much bigger in the hand) but side by side the larger screen on the S10e is so obvious.
I have always usually plumped for basically the biggest phone I could get but after the OnePlus 6T I just got fed up of trying to keep the thing in my pocket.
The size convenience of the e is just great for me. I'd never get a phone that was huge again given that the S10e's screen is still a decent 5.8". It's just way easier to use one handed as well which I'm liking now after all these years of 6"+ phones.