The anthena's are similar in amp, and even that is different. The 10inch anthena is using the 8inch energy's amp. The 12 using the 10's. The s12.3 has 300rms, 1200peak. The boxes are different, and so are the drivers. I think the energy's would take the cake, I've heard the 8, 10, and 12inch version and it really huals. My brother might get the s10.3, and im going for the s12.3. The energy's are also rated to go lower then the anthenas. Maybe today I will listen to the anthens and tell you what I think as far as comparison goes.
sheep