They are very reliable, they provide great customer service with all of our questions answered in less than an hour! I have used them for meetings before but this is my first time using their live chat feature which has been helpful also because it makes scheduling easy to schedule multiple appointments or conferences at once without having to wait too much longer then you wanted. Nothing really bad about unlimited conferenceings services so far other that maybe sometimes there could be some lag when someone tries joining your meeting after its already started? We use theirs mostly as audio only type settings though we do plan on trying out more features eventually. Our business uses ours mainly for recording training sessions where people can join remotely from across state lines and countries around world.