The Sporta Pro thicker cable than the Porta Pro and can be adjusted or worn on the neck or on the head. The Porta Pro is not adjustable and is portable only on the head. But both are collapsible for transport.
The Sporta Pro I have been around for over 4 years (also use it since day) and he's still as good as new. I use it mainly for traveling, combined with my iRiver H120 (unbeatable).
The Porta Pro I have recently bought for home, for my PC and notebook. Normally I use my Technics headphones next time I'm on the PC to listen to music, but unfortunately too little bass. The sound of both headphones are just great! Very good sound with good bass sound that does not "washed out" sounds.
I can recommend both headphones definitely very who like hip-hop, soul and RnB listening mainly to people. So honestly, what do you get headphones for the price, including a 10 year guarantee and also still with excellent sound? Buy I just say!
