If you can't find anyone willing to demo the Empeg/RioCar for you, the sound quality is better than Neo's. That is from a technical standpoint comparing software-based (Empeg) decoders and hardware-based (Neo). I am not an audiophile, so this is something that is coming from memory. Neo is run through an existing head unit, so the amp in your HU will determine sound quality/loudness as well. With Empeg, in the intended installation setup (no HU), you will need an external amp which is almost always better then what's built into a HU.

If you have a Best Buy near you, they should be stocking the Neo. They would probably be happy to give you a demo. I have not been in a Best Buy since they started carrying it, but I would assume they have them on display.