This is is a Joke or someone trolling. As a dive Instructor and most Instructors I know, there is not ONE computer on this is I would recommend. Ok, well the Garmin is freaking Awesome... If you are going to use ALL the features sure its might be worth $2000. Mares Genius or Aqua Lung i770R at $1000 over a Shearwater Perdix at $900, No way in heck. I dare you ask any instructor or Tech Dive their opinion. Where is Aqualung 470i, 200i or 300i.. all better then any computer you list. Deep 6 Gear Excursion Dive crushes Cressi Leonardo.