I mean like a form you can fill out that has questions (i.e. manual or automatic, Do you care if it looks like a real cigarette?, do you want pre-filled cartridges or fill your own?) and then based on the selections you make you get a model or two that would be "good" for your current wants/needs. maybe with a couple links to vendors of where you can even buy that particular type.
If you supply the questions and 'answers' (which models apply to each question, yes/no or whatever), i could write the logic.
I might be able to think of some of the relevant questions at least, but am nt at all familar with all the models.