What's the best class for endgame playing? Like for killing bossess and monsters and pvp

allot of ppl are liking the siren & gun zerker, but the zero can be good too.

they are all pretty fun...im lovin the siren..shes beast

Build a mechro the right way and thats all you will ever need they just lay waste to anything. Me on the other hand i love the zerk

I prefer Zer0 because of the proficiency with sniper rifles.

Second choice is Siren.

This, I built one and the majority of my points went into the skill tree on the left (Best Friends Forever) and Robot boy kills everything you can find. Slap on a shotgun and keep adding 5 seconds to the duration per kill = easy 5-10 mins of keeping him around. Especially useful in the gladiator arena zones.

this.

Gunzerker/Siren for boss klling Mechromancer for screwing around....commander/zero are boring as shit to play...