I've got n24, the glasses work temporarily for me but i cant see them as a long term solution as the entrainment doesnt last. Dedicating 3-4 hours first thing every morning to staring at a painful light while getting nothing else done (no driving, no computer, no active work or exercise, no going out in public) simply defeats the purpose.

ed: I should caveat that some people will no doubt be able to do some kind of productive activity while wearing them, I've not yet been able to.