in my subjective opinion
ER4B > ER4S > ER4SR > ER4P > ER4XR and.. > MK5
But at $50, the MK5 represents excellent value and I would definitely pick the MK5 over similarly-priced earphones: I just love that Etymotic sound and I can't go back after getting accustomed to it.
ER4B > ER4S > ER4SR > ER4P > ER4XR and.. > MK5
But at $50, the MK5 represents excellent value and I would definitely pick the MK5 over similarly-priced earphones: I just love that Etymotic sound and I can't go back after getting accustomed to it.