best class for game completion?

Ive owned/played every single class in the game
Drks mobbing is good but because they atk slow as pineapple it is nothing to be proud of
What I was referring to as the good/bad was that IRRC dark impale has a fixed speed and hardly improves their pomegranatety DPS
And ik the next response is gonna be hurr durr HB at end hame bosses,
There are still people with hp washed bms/nls that what holds people back at end game bosses isnt living but its glitches and hackers

next response is actually that DI isn't fixed speed.