After getting mx 170 of sennheiser whose sound details were amazing . I was much expecting from these earphones . The so called cx 300 ii was not even close in detaling of sounds like mx 170 . And all my sennheiser earphones had issues after 8 to 10 months . So better get them in warranty of 2 years . Overall its a very good company . I am getting new earphones this week . Can anyone suggest to get cx 180 or mx 170 . I need detailing in sound .