I'm using a 575W (at 4 ohms) solid state/tube-pre hybrid head. For the past year or so I have been using it with an 800W 4 ohm 6x10 cabinet. Recently I acquired a 300W 8 ohm 1x15 cab and I must say I enjoy the tone more so than my 6x10. Maybe it's the larger driver, maybe it's the ported cab on the 1x15, maybe it's all in my head. All I know is I love it. I am considering adding another 1x15 cab (for a total of 2) and ditching the 6x10 all together. Is this a wise move for a band that plays medium sized venues (200+)? Which setup will give me more headroom?