Recently I was shopping for speakers for my iPod and iPhone to use in my teaching studio. Although the official docking stations are nice and have many features they are expensive and most are not iPhone compatible.
So I ended up purchasing a nice set of computer speakers. They were at least 50% less than the docking stations, came with a subwoofer, and can be used with anything that has a speaker output. Perfect! The only drawback is that it doesn’t charge the device – but I can live with that.