Advantages, Alot more flexibility, Can do alot more types of doses, 0.1-1, an inject any time anywhere, don't need to be on multiple injections, reminds you when to test, it does carb counting for you if you put the info in correctly, Disadvantage: if you do't get a wireless one you have to have a tube into you most of the time, which some people aren't a fan of but It doesn't really concern me at all, that's the only downside i can think of it, they're really fantastic to have