I have to agree with SWC10. We looked at and even bought a couple of the < $100 docks and most of them sounded like crap. The only "all in one" docks that sounded good were the Bose ones for over $300.
We ended up settling on just getting a basic doc
link and then we decided that I really didn't need a high end sound system in the garage. Now we are both happy.
Even though I really miss not having a kick butt system in the garage- (sniff.)