I currently have a Strat-style guitar with active EMG's, a Roland Cube 60, and a Boss ME-20 (I use it mainly for the volume pedal and noise gate). I heard of people really liking the sound improvement of adding another speaker to their cube. Since I am looking to upgrade my sound, I am wondering about getting another speaker for mine. I want to have more warmth and fullness to my sound, but I don't want the cab to be really loud. Does anyone have any reccomendations on what speakers I should look at? What size? Or if I should even get one at all? Thanks.