Which one? Opinions? i am leaning towards the SVT-1540HE. because it is 550 watts. and the head i want is carvin R600. the SVT-810AV is 800watts i think and i would probably have to go with the R1000 head. and i dont need that much. The 1540HE also has 4X10' and 1X15'. so that seems really good to me. what do you guys think?