Better bass control than CX300, not sure why you would consider moving down to the Sennheisers from the S4. The S3 packages all of the flaws of the S4 with fewer of the strengths. Aside from having good detail and clarity in its price range, I really wouldn't recommend the S3. The E10 is softer-sounding and a lot more spacious, with less peaky treble. Much easier to recommend. The Turbine is less trebly, period. Also warmer and much smoother. I've always like the Turbine better than the S4.
the headphones i have right now are the cx300 and i was thinking of upgrading upto either the klipsch s4 or the soundmagic E10
which is better in terms of bass and overall?