If you can get it for free, then you have nothing to lose.
Bose gets knocked a bit in the forums for the fact that for the amount of money that it costs for their system, you could shop here and get something better and might even save some money. For the normal person that doesnt want a lot of equipment, or tons of wires hanging around, but wants a decent setup, then they look at a Bose.
Also people tend to stick to a company that they are familiar with unaware that there are other choices that are available , and that is what AudioGon offers .