Which speakers are you looking at putting in the "full immersive system," and could you give us details on the room it's going in?
Generally speaking, if I was wanting it primarily for movies/TV and video games and had a room where it wasn't difficult to place all of the surround channels, I'd go for full surround, maybe bookshelf speakers all around if it helped me get two subwoofers (EP600s or EP800s if possible). For a system where music is the priority, I would go for the Actives.
But this isn't based on real-world experience in which I've directly compared both of them. Hopefully Axiom themselves can tell you they've compared them in their listening room.
