Which would be better, 2 12" cvr124's in a vented box, or 1 SoloBaric 15" L5 or L7 in a vented box, as this will go in the trunk of my car, no hatchback, have a 2 channel kicker amp that puts out 275rms x 2 into 2 ohms, or 500 rms into a 4ohm mono. Thanks in advance!