I currently own a pair of Blox M2C. They have THE sound for my taste. Can't really say why... I can't spot anything over-exposed or over-emphasized in their sound. Everything sounds just perfect for my ears.
So, I am looking for some IEM's that could compare to the Blox, in terms of sound signature. They can have a bit more bass, a bit more treble, a bit more forward mids, but they can't have a hugely different type of sound.
My budget is 100€ at max!