Hey everyone. I might be getting sucked into a MB 1x15 rig. I'm curious what the difference between these are aside from the JBPS has no tweeter and less wattage. The first two amps are over $1k and the JBPS is $500? There has to be more of a difference than just "this one doesn't have a tweeter and it has less power." Anyone ever been able to directly compare these amps?