If we find that the V6 actually sounds better to most people than the V5s with the same opamps, what does that say about the folks who don't use any type of charging circuits in their portable amps because the extra circuits "color the sound"?

IMHO, I'm all for it - I haven't had a portable amp very long and I'm already tired of doing the 9v shuffle. My amp is even more inconvenient, 'cause it's in a Hammond case and doesn't have thumbscrews, so I have to find a screwdriver evey time I need to change the battery.
Do you think the influx of Chinese amps with built-in chargers & Li-on batteries is having an affect on the existing mfrs, or is this just a response to customer feedback? Maybe both?