I'm looking for a pair of IEMs to go with my smartphone for on the go listening where isolation is required, that preferably come with button controls for ease of usage. I'm mostly listening to hard rock, electronic and theme music. The budget is around 60 euros / 80$. I'd love to hear your recommendations if you got a second to write. Also, I've got one quick question; do the button controls on headphone cables lower the sound quality somehow?