Hi! I recently picked up the Newegg deal on the Studio 130 with the free 120C and I like them a lot. However, they also have the 180s for $99 each (w. delivery @ $5) which lead me to thinking of moving the 130 to the back. Well, one thing let to another and I've run into the ES80 at $144 each delivered. Is the ES80 a better speaker? Would I need to also buy another center if I chose the ES80? I guess I'd like to know what you'd do? Thanks in advance.