Just wanna give you guys a quick update...
Right after Christmas I decided to go forward with the EP500. I received it last week (had some manufacturing delay on the amplifier).
First word that comes to my mind is: wow! The addition of the EP500 really changed everything in my room. I feel like my mains are even playing better (must have something to do with the crossover setting). We watched Quantum of Solace last night and at one point my wife told me: The house is shaking!! Do you feel it?! What an awesome experience that was.
Thanks to all of you guys for your good advice, I can't be more happy with my sound system.