Great thread. I am in the horns of a dilemma. 1) I am getting a great deal on the Sopra N3s, not on the N2s. 2) my room is l shaped with the larger part of the room being 300sqft and the smaller part of the L not exactly being straightforward but having an effective area of 100sqft. The Sopra manual says that the N3 is fit for 350 to 700 sqft, and the N2 for upto 320sqft IIRC. should i go for the N3?