I suggest you to use oratory presets only as a general guideline. I find that those presets sounds harsh too. Try to learn how to EQ by yourself, I learned with some hours of training.

An easy way: you can start from the oratory presets and modify up or down the bands that have the low shelf or the high shelf, following your preferences (do it while you listen to a song that you know well).

You can also look at the frequency response graph of your headphone and identify all the peaks and the dips. Then simply eq them.