Well, if you're doing an endangered species study...
Why not dripping? Don't like carrying bottle around and dripping every 3-4 puffs. Each 1/2 ml cart lasts me an hour, heavy vaping, tastes good. Hope to double that when I get the bigger carts.
Why not cartos? Tried to refill some pre-filled 808 cartos, didn't work well. Besides, to extend life of cartos, they must be cleaned anyway, I just dry burn the attys. I didn't feel like tossing cartos every week or two.
What's the benefit?
Cheap, still using same attys > 4 months, none died. Once got my batts, attys, and 1 liter of juice, I'm done. The bank is closed.
Simple, no boiling of cartos, no syringe, no buying new cartos, no fluffing wicks, no punching holes, vodka, blow dryer, jewelry cleaner, etc.
Quick, 10 minutes a day dry burning attys, 5 minutes refilling carts. I refill 10 carts twice a day, total 5 minutes. Have enough carts and blue foam to last half a life time. Cartos are easier for on the go, but I don't travel much.
Edit: To me, it doesn't matter how I get the juice to the atty, cart/cartos, or how many coils, how many volts. It works, close enough, and it can't get much simpler.