I'm having trouble deciding between a 50 watt plexi or jtm45 kit. I like the tone of the jtm45, but I like having the extra power on tap with the plexi. What's the headroom like on the plexi? Is there really a big difference in volume between the two? Would I be able to notice the difference? If I kept my plexi on lower volumes, could I get the jtm45 tones?