I have a vs 30w and love it and the
dna board. I don't vape under .5 so higher wattage isn't an issue. The vs produces the same quality vape from beginning to cut off. The wife got me the rdna 40 because it was on sale scratch and dent and she wanted the 30w, which arrived perfect and it's the same way I can't find a fault for my needs. IMHo anything with a genuine dna or yihi board in it is worth the money. I've had both and liked them all. Isticks?? never again for me at least. Research, look in the threads, you can find what you want to know. At the end of the day it will be what works best for you.