I've read from multiple sources that it's 30, but I can't for the life of me figure out how one is capable of arriving at that number as you would need a grand total of 120 light. Exotics, being the highest tier of gear, can give a max of 30 light each, which would give you 120 light with a full set. However, you can only equip one at a time, thus making level 30 impossible to achieve. I've yet to see any legendary gear with a higher max light value than 27, so shouldn't the max level be 29 with a light value of 111? Or does the final stretch between level 29 and 30 shrink from an 11 light difference to 2 for the sake of it?