All great. SB is like the step up from AF. SB doesn't give you a buzz unless you are REALLY sensitive to nicotine. AF is a great buy for the amount of money it is sold for. AF gives you a light buzz sometimes. AF doesn't have hardly the amount of flavors SB has.
Tangiers is a whole different ball park, it is not washed so it has a much higher nicotine content so a hardcore buzz ensures. It is made with Molasses, and the taste (if you get a good batch and acclimate it) is the best you can get. it smokes harsh usually and takes alot of practice to keep it smooth. I think ti is worth it, others don't.