I don't like submixing, for two reasons. One, it means a lot more equipment to haul in, find a place for, and hook up, leaving room for plenty of error. Two, it limits your resources. For instance, use a submixer and then the monitors are limited to one mix from that source. Also, using a submixer, you can't use effects that are patched into the main mixer. On a side, with my 01V96, I put all the drums on the expansion channels, which means if I want to adjust drums, I go to the second layer, and there are the drums. Everything I usually am adjusting is on the first layer, then the drums are on the second, giving me in affect a submixer for drums, albeit with full function and connection to all monitor mixes and effects.