I've had a few more weeks with my V5 and I'm growing even more fond of it. Just thought I'd make a couple of comments, in response to a few questions I've read.
With limited herb supplies, I usually run my (very) dry herb through a grinder, then put in a pinch or two until it's loosely filled to the edge of the ceramic chamber. I don't pack it at all. When I feel like it's getting weak during a session, I'll take off the mouthpiece briefly, close the top lid, shake it, and replace the mouthpiece. You can do this while the mouthpiece is in place (I typically tap the V5 on my knee), but it doesn't "toss" the herb as well, since it doesn't have as much space to move. This gives me perfectely browned ABV throughout.
The taste, particularly of the crappy low-quality herb available in the backwards state I live in, is still pretty terrible. To counter the nasty taste, and to increase clowdz, I drip 2 drops of my peppermint e-juice (very low nic) onto the dry herb in the chamber. Makes it taste great, and helps you "see" how much you really are vaping the herb. Don't know if this is something that others normally do, but it works for me.
Finally, I'm still trying to determine the exact size of the plug connector for the Vapormax charger, I'm measuring 3mm. It's a 9v 1000mA charger.. Something like this should work as a car charger:
http://www.dhgate.com/store/product/high-quality-2m-cable-300pcs-9v-1a-car-charger/156553466.html