I tend to listen to music that's heavy on bass, but equally as much I listen to World music (ethnic stuff I guess). It will be for portable use primarily, so i wouldn't want huge cans on my head. I've never gotten on with earphones, but in-ear headphones work for me (earphones tend to fall out...

Hi all, long time lurker first time poster. I've been looking through previous threads and have been unable to find a comparison between the Sennheiser CX400 in-ear headphones and the CX500 version. I get that 500 is crisper and more balanced than the 300s, but how do the 400s compare...