With my DT 770 I initially thought the AutoEQ and Oratory presets just make them sound boring and unexciting. I tried a couple of AutoEQ ones, Oratory manual preset and random presets from youtube and reddit. People said they make them way better, but I always came back to stock.

But lately they've been growing on me a little. I can listen either with stock or with the more neutral EQ presets, depending on my mood. Sometimes I want more oomph (stock) and sometimes I want more relaxed, less fatiguing sound.

With my AirPods Pro I prefer the stock sound, presets make them sound kinda thin. I actually like the neutral sound here and feel like presets take it away. I just manually boost treble, and sometimes sub bass when I feel like more oomph.

My Porta Pros are a lot better with Oratory preset. It makes them less muddy and gives them some sub bass and bass separation.

My Sennheiser Momentum In-Ear is the biggest improvement with presets. On stock, the bass overpowers everything, except the high treble. After EQ they sound very decent. I was honestly surprised how good the presets make them sound.

So all in all, it really depends on the headphones. The presets can be used more as a correction for bad tuned headphones which sound you don't like, rather than enhancing a pair that is already good.