My prior speakers were Spatial Audio M1's. They are open baffle with two 15" woofers and a compression driver. Prior to that I had an Altec 604 based speaker. The stock Cornwalls have much better bass than either of the two previous ones. The Spatial Audio speakers had more resolution, better imaging and deeper soundstage. The Cornwalls better them in dynamics, tonal quality and lack of fatigue. I tend to value musicality over ultimate detail which can be fatiguing at times.