I wouldn't consider either the NarDa or the Hadaly as being able to do Wide Open/Lung Hits.
But in the Lest Restrictive setting, and with a Drip Tip that has a Large Inner Bore, they Aren't super restrictive. But not Tons of Air either.
I had a Hadaly, way too tight for me. Kinda liked it actually, but just couldn't use it much.