I have found that LR atties use WAY more juice.
I have an LR 901, and I have to put 7 or 8 drops on it just to prime it and get rid of the brunt taste. Two puffs later, it needs three or four more. Five or six puffs after that, it needs three or four more, etc.
I have also found that it really over-cooks some flavors. A lot of flavors, to me... Anything subtle or sweet is not really for an LR. It will bake the flavor right out.
It's true that they produce a ton of vapor, but since I don't really care for 5v, it's not worth the maintenance or the extra juice to me. There is only one thing I use my LR for.
On days when nothing I'm vaping is doing it, I pull out my LR, put Cinnamon Red Hot juice in it, and vape that for about 15 minutes.
That's it, though. I couldn't see myself vaping it all day, and the cost in juice would be killer from my experience.