After buying the Portapro, I am buying another on-ear ear-buds which was from China, Yuin PK3 from eBay for $46, ow waiting for it to arrive maybe in 2 weeks time.
Some said it is the most value for money earphone at this price range with great sound-stage and clarity, and enough of bass. So let's wait and see...how the sound quality and build quality.
The design is blatantly ordinary, its black and looks just like some old Sony ear-buds.
Here is the picture from Google.