i have found a 215 cab and a 410 cab at the same price(from laneys richter series). Which one would be louder (as loudnes is my main motivation for buying an amp). do you think a 165W head with one of these (laney richter series also) would compete with a 50W 12" guitar amp? the other option is 300W (£300 for 300W, £220 for 165 W). also a few random questions: 1. what is a mofo? 2. What is GAS? 3. what does this mean: "There is also an XLR DI output for connecting to an external power amp/PA or recording device" thanks for your time.