I'm subbing for a band next week that claims to be "on the louder side" at a venue with no PA support. From looking at their website, it looks like their regular bassist uses a 4x10, maybe a GK but hard to tell from the pics. I don't have a cab that big so am wondering what gives me the better chance of being heard. I have two options. First, is my LoPhat 12/6 has a 12" rated at 1000-watts, and a 6.5" rated at 300-watts. Crossed over at 500Hz, so the 12" is taking a brunt of the signal. The cab is bigger than option two, but the surface area of the speakers is smaller. Power handling is higher. My other option is my Genz Benz shuttle 210 cabinet. Rated at 400-watts overall. It has more surface area to the speakers but has a lower power handling rating... though I've heard GB is pretty conservative on such things. I don't really want to run both cabs if I can help it. From what I've read, that would be more headaches than a 45 minute, $75 gig would be worth. I'll be using a Shuttle 9.2 amp. If it matters, this is an upright gig in a rock-a-billy/country band. thanks in advance for any input!