Which melee DPS can keep itself alive the most?

[YojimboM]

Yes, but not 2 charges of Life Surge and better health.

DRG does not have "better health" than other melee DPS (it literally shares 1:1 gear with RPR for that matter which means it has identical main stats). Life Surge results in 0 effective healing if your HP is full. On top of that, the heal from Life Surge is terrible to the degree of it being almost cosmetic at this point. Life Surge is likely the next skill to get pruned since it's typically regarded as a bloat skill these days.

All of that is without mentioning the fact that it hurts a lot worse to use Life Surge for healing than if you were using it correctly within your rotation for the DPS gain...