There are so many zip lining companies available in Monteverde that it can be very hard to choose which one to do. I would recommend the Original Canopy Tour to anyone who wants to experience a bit of thrill, the treetop canopies 5 stories up, and who wants to save some (or a lot) of money. We had done the Adventura zip lining experience previously and at $15 more for students it didn't deliver a whole lot more. The longest zip line at Original was 800m, but it felt more than long enough, and the views were spectacular. The Tarzan swing and rappel were a thrill and more than quenched our thrill seeking urge. The best part about Original is the guides. They are all very nice and make you feel safe and comfortable with their near perfect English. There were a group of 3 young children ages 5-11 in our group and the guides would accompany them on any lines that they did not feel comfortable doing on their own, truly remarkable service. I would recommend bringing a jacket and wearing long pants as it can get a little chilly up above the tree tops.