Never imagined the CX300 ordered on Thursday because I had lost a rubber stopper from the Creative EP 630 and no reasonable substitute found. One reads so at every turn, which would be these two InEars identical and it is better to resort to the more favorable creative. In direct comparison, I can not confirm that. The Sennheiser not only sound much clearer but are also a lot louder and therefore more power efficient, which makes for a longer listening;). Compared to the EP630, however they also have a little less bass.
