Monster park extreme or Evolving system?

Evolving World's still the fastest especially since MPE's been sort of nerfed after the level changes. For some extra input, my DA that had no funding went from level 100-120 in about seven Evo World runs using just the 1.5x coupon from the Rest part-time job and level 2 Elven Blessing along with the HP x 5, spawn 30% and level +7 cores.

Now mind you, you may take a bit longer depending on what class it is so adjust accordingly.