I tried a few of the earphones in the thread, the salnotes and the kiwi ears, and they are just really harsh compared to my el cheapo wireless bluetooth earbuds or regular headphones. I always see people with the Shure 215's. Are they mellower?
I went with the Tangzu Wan'er because they were mellower.
Also, getting a good seal is import for decent bass response which leads to a mellow tone.