#3 is interesting, but feels like too many font-types. Like the cigarette replacing the "i" in "quit". Try matching the "it's a" and "to" text to each other with the same font and weight.
#4 - the wings/halo doesn't fit with this campaign. But we like the rest of the text treatment and cigarette underline.
We really like #5's use of the Q-with-devil-tale and the halo theme. Doesn't work for this campaign, but is a great concept.
Hi, Thanks for your comments, glad if you like my concept :) Here are new revision based from your feedback. I'm removing the halo, wings, and devil tail