Best loot system in your opinion?

[Grimtide]

We are using personal loot and it sucks, me and one other player have been suffering very bad rng and are falling quite behind the rest of the group.

[Cute Chen]

My guild uses open roll because we are all intelligent adults and know what is good for our spec and we want the team to progress. Usually if something is a toss-up, whoever has the higher item level will pass on it.