The toughie is that if a person tends to like/need higher power, consistency, or likes to be able to nudge a little higher or lower during the day, the VV really is the way to go. I've had a really beautiful wooden bottom feeder, with good high capacity 18650 battery, and good LR atty. At 1.5 ohms the unit would run briefly up near 12W, then quickly drop to a little over 9W, while a 1.8 ohm atty would start at 9.8W, drop to 7.6W. If someone is good with a brief period of relatively high power, then a pretty long period of definitely lower power, it works, but you really can't tune it mid-stream.
I ended up passing along the unregulated feeder to someone who appreciated it and was happy to work within its constraints, but that was a real trade of capability. Yes, you can use a Kick in it, but that then forces use of significantly smaller battery, shorter run time, another conscious trade (and noticeable nudge up in total cost).
The plus of the unregulated, beyond cost, is sheer reliability. As previously noted the VV electronics don't like to be put in the water (though they stand up fine to a little normal rain, snow, etc., during use). The unregulated unit doesn't get harmed by water, if you rinse it off and dry it out.
Decisions, decisions. Both Grands are beautifully crafted devices, but there are real differences that no particular atty somehow changes. There's no single right answer.