Originally Posted by
petmotel
I use Sierra-2EXs as the side surrounds in my system and love them in that role. For me, I'm always in the sweet spot, so I'm not sure that wider horizontal dispersion would contribute to the experience.
There are instances in movie soundtracks where there are loud, impactful effects coming from the surrounds, during which I'm thinking the extreme dynamic capabilities of the EXs is a very good thing. I've not yet experienced the Lunas, so I have no first hand opinion concerning their dynamic capabilities. All this to say that I think you will be very pleased with your choice!
Jay