Well, the price difference between the Sportz and the Magna is very less compared to the features you get in to the Sportz over the magna. Some people find the music system not up to par but then that differs from person to person. I f you are fine with the music system sound quality then I would suggest going in for the Sportz. Getting a Magna and then getting head rests fitted is an unnecessary headache. If you have a bandwidth in your budget to accommodate the sportz better go in for it.
There are many options available for a 2 DIN music system for Hyundai EON in the market. You can check with a local car accessory shop to know about the options in detail. Also, you can check out some options on our online shopping portal. Please find a link below to check out the music systems http://shop.cardekho.com/car-accessories/music-systems.html