[mcmickle]

Unfortunately, this really depends on the room itself and what it needs. Is the sound really live or really dry in the room? It is usually pretty hard to make a room sound larger than it is. I find this works better in plug-ins, or by using a larger better sounding room.

I would say you are on the right track though. These should certainly improve the sound quality in the room.

As far as a round room...seems like a lot of trouble. not sure if it would be worth the effort.