The Sony MHC-V83D is a jack of all trades; there is really a lot it can do. But if you're an audiophile and demand the highest fidelity or are specifically looking for positional home-theater audio, this isn't for you.
The Poly Sync 20 is a perfect fit for your needs and can deliver music with incredible clarity as well. Just be prepared to pay for the quality and hassle-free app compatibility it affords.