Both vaporizers sell for the same price, so that's not a factor. I would lean towards the InstantVap too. It seems the more research that goes on the higher the dosage ceiling gets. I understand Randy Oliver is using dosages that exceed the recommendations, but I couldn't find it on his website. (It's a little hard to navigate.) The plunger style with varying amounts of OA would make it easier to treat nucs, small swarms, etc.