I've only done one launch here so far (today, still in progress) and unless I've done both I think it's difficult to answer your question. At first glance I would tend to say that if you have an existing audience (or the financial means to push it on social media) then the Waiting List side could work. From experience, waiting lists work when: - This creates a viral loop - That the reward at stake is obvious - That the product is great So it all depends on your starting point I think. Whether you already have an audience or not (or friends who have an audience). I think that weighs heavily in the balance.