Volcano is still king vape imo. It vapes the weed in one go (turkey size turkey bag) and then you rip it from the bag.
You can then immediately dump the weed out so it's not sitting in there baking. And either run the seconds again or make food with it. Whereas conventional vapes leave the weed sit there in a hot chamber while you're not hitting it. And you get a handful of fresh rips.
It's clunky and you gotta sit there with a balloon on your lap but it's still the most efficient I think.