*shrug* I have opened dozens of chests myself, this is what I do with my time when I am not doing dailies or Ops, I farm orange gear and happen to open 3 or 4 chests an hour.
I get about 80% green drop rate. I am a statistical nut, I can give you a break down of how much money I make per hour, how often a chest spawns, how much each chest drops, how often is drops a green and the avg net worth of each chest.
I could also tell you which mobs drop the most oranges per hour. But I won't because I like having a lot of oranges to sell on the GTN and would rather keep my spot to myself for as long as possible.
Good day to you.