Bass:Sennheiser CX 275 vs Sony XB30EX?

[Ray]

Has any used both of them? Does the CX275 has same level of bass as XB30EX?
If anyone has used the XB30EX-how long did they last?

 

[ras]

I've been using XB30EX for over a year now..still no issue.

 

[Ray]

anybody has any idea about the bass??