Which one would you choose? I don't need much power for a Church setting. I have a SWR 4004 that i am selling because it is too sterile sounding. Which one of these would give me a better starting point towards a more warmer, smoother sound? After reading some reviews, it seems the B2R seems underpowered and has some noisy fan problems? But sounds great? The GK might be alittle sterile sounding but better power? Hows the fan noise on the GK?