I currently have a Mesa Big Block 750 and am thinking about selling my Big Block and going to the M6 Carbine. I like the features of the M6 Carbine, and believe it or not it pumps out more watts at 4 ohms than the Big Block 750. I'm just wondering if this is a good idea. I have a rack mount tuner, and both have tuner outs on the back panel. I've had this Big Block 750 for 3 years and have never used any of the features such as Over Drive and others. I'm just wondering what would be better for me. I searched up the wights and the M6 weighs 7 pounds lighter than Big Block 750. My current cab setup is a 4x10 and 1x15 which is a impedance of 4 ohms. The Big Block sends out 550 watts and the M6 sends out 600. I play some gigs, and am thinking the M6 Carbine is more appealing. The voice feature is moving me towards the M6 as well. What are your thoughts?