I cannot say much about the new eco entry to the Epos sound, but from the beginning the original and the new regular Epos the ES series as well as the M series, they are not spectacularly expensive retail and are great bargains used, why risk unsatisfactory sound with more affordable than affordable Epos? I do not know. I have the ES 11, bought demo, sold, then bought used again(it happens) and the sound is for sure SPECTACULAR. The ELS, hum.....No magic bullet can be bought on the cheap and those who claim it, snake oil sellers.