I can't imagine going over 150 watts even occasionally, much less typically, but if I did I think I'd prefer the Wismec RX200 over any dual-battery mod. It's one of the very few mods that's even capable of truly running at 200 watts if the user actually felt like it. But, again, that kind of wattage isn't my cup of tea. I do use the RX200 though because I dig the battery life. I'm lucky to get above 70 watts on my drippers, but it handles it like a champ and seems to put very little strain on the batteries.
Just my

for what it's worth.