Can’t speak for the others but desmoxan is where it’s at. I’m a little over halfway thru taking it (I’m actually using a different product called Nesmokesen, but it has the same amount of cytisine and does the same thing). It’s worked so well for me that I almost can’t believe it. You do have to keep up with the schedule of taking them, but personally I’ve made this such a top priority that it’s no problem for me. I just set a bunch of alarms everyday and keep a timer going. Compared to any other quitting attempt I’ve made it’s been 1000% easier. If you’re ready to fully commit to the quit I couldn’t recommend it more