I think it gets comical, people blaming something for being what it is rather than getting their facts straight before purchasing or looking at something that meets their expectations.
Many of the Mods say they will do 5w or 7w on the low side when they have no Buck circuitry. They also list their Resistance points like .2ohm to 3ohm. Somewhere in there they will do as specified.
Well, its cost prohibitive, I build my own coils. Guess what, so do I and I know how to read a chart or calculate needed resistance to meet requirements.
Not sure why anyone building their own coils is concerned with 7w but oh well, it is what it is.
Ni200 Canada - check Ebay.ca
1.8ohm Kayfun would happily cruise along at 11w
2.8ohm Protank would run days @ 6.3w
.8ohm dual coil Magma will be excellent at or above 22w
Having a proper Vape is All inclusive, not just a mod or a tank or a coil preference.