Thinking about picking up a Fargen Blackbird. I seem to be drawn to amps that have a 6V6 configuration so I'm leaning towards the 30w version. Has anyone compared the two? Is the 30w loud enough to hang in a band scenario without breaking up (say clean funk vamps etc)? What's the difference between the 30w and 40w tone wise? No clips of the 40w up on the Fargen site. Thanks.