I heard that dock and thought it sounded terrible... But I was looking at the price at the same time so maybe I was thinking more about the sq you can get for $600 vs the small all in one system...
What are you looking to do? Just a decent system with audiophile quality sound or does it have to stream to your tv{ phones do that alone}?
if you just want something you can drop your phone or ipod on and play music..
I would grab one of these on sale
PA 2-50 Stereo Amplifier | Sherbourn Technologies
one of these
Amazon.com: Pure i-20 30-Pin iPod/iPhone Speaker Dock: MP3 Players & Accessories
and a pair of these
CBM-170 SE High Performance Bookshelf Loudspeaker
thats around the same price and would sound much better...