OK I'm deciding between one of these 2 amps to power my 2 12" Alpine type S subs, the RMS is 300 watts and the max is 600 watts per sub and they are dual voice coil at 4Ohms + 4Ohms per sub. Which would be a better amp for them, a JBL BP600.1 or an Alpine MRD-M301? I can get the Alpine amp for $200 and I can get the JBL amp for $230 or less.