Which Sennheiser earbud is better?

[Amedinno]

CX 300 II or CX 5.00i

Which one is better in terms of specs and comfortability

 

[Amedinno]

Or do I have a better option at 50$~ range?

 

[azaran]

The CX 5.00 have slightly better specs. But depending on your hearing you may or may not even notice. The big difference is if you need or want inline controls on your earphone.