I'm finally going to be upgrading my rig in the next few months. For speakers, I'm looking at getting a custom 6x10 cabinet from LDS. Right now I am tossing around the idea of either an all-tube head or a hybrid. I've played the Mesa M-Pulse 600 and I dig it. Would this amp sound its best through a sealed 6x10 or a ported 6x10? Perhaps another cab recommendation?