Hi guys, I am currently trying to decide between two amps, the Soundstream Van Gogh 320.4 (80W RMS x 4 into 4 ohm with 115db S/N) and the Audiobahn DUB5004 (75W RMS x 4 into 4 ohm with 100db S/N). I require two such amps, one for me and one for my bro. My bro is running two JL dual voice coil...