PLEASE avoid Bose!
All things made by Bose sound absolutely horrible for the price or are built terribly.
Look at the Bose Triport. Those things cost between $150 and $180. They snap after months of normal use and don't even sound as good as most headphones priced more than $100 less.
Their speakers are the absolute worst in the industry.
http://intellexual.net/bose.html
If you want a little speaker set, but don't want to go with a full blown hi-fi system (you are willing to spend $500, right?), then just get yourself a set of really good PC speakers.
For a little over $100, you can get these:
http://www.newegg.com/Product/Product.aspx?Item=N82E16836121122
Just get yourself the USB charger for your iPod and the dock.
Those speakers will make the Bose Soundock sound like a $20 toy in comparison.
If you want to spend around $400 on speakers:
http://www.logitech.com/index.cfm/speakers_audio/home_pc_speakers/devices/224&cl=us,en
10" 188 watt subwoofer. Plus you can use one of the built-in sound modes to mirror the stereo sound to all of the speakers and have a nice 500 watt system filling your room with sound
😉
And you'll have money left over to buy the universal dock and USB charger.
If you want to spend your money on a receiver and some floor standing speakers.........