Maybe you could convince your friend of the value of spending more money on the sound side of the equation if you could take him to hear a good sound setup, especially if he could hear a good demo of the SVS subs.
How big is the room, and what is the budget you're trying to stick to? All three are respectable brands. I would suggest you consider SVS for the sub instead of the ones you've listed though. I like Paradigm speakers a lot, but thought that their PDR subs were quite weak. Owners of SVS subs...