I can't decide wether to buy Viagra or Cialis. I've heard that Viagra is more intense but Cialis last up to 36 hours. What I'd like to know is how much longer can you last if you don't have ED? On top of that do either of these supplements allow you to go at it without having to pace yourself? Also is the liquid stuff any good? Sorry for asking so many questions but I want to make sure I get this right. Thanks!