Should I get a speaker dock or bluetooth speaker system for iPhone 5?

I was looking to get some sort of speaker system to play the music from my iPhone 5. Of course for the docks I will have to buy the adapter so the iPhone 5 can be docked. Should I
a) Get a small speakerdock
b) Get a shelf system that has a dock for the iPhone, such as this http://www.bestbuy.com/...&cp=1&lp=1
c) Just get a wireless speaker system, such as this http://www.bestbuy.com/...Id=5563122

As far as a budget, I'm looking anywhere for $250 or less.

Blue tooth works great with my friends I phone he got

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