Which pokemon should be in my party, arcanine or typhlosion?

which pokemon should be in my party... ~arcanine: hasty nature, moves: fire blast/dragon pulse/flamethrower/extreme speed~ or ~typhlosion: hardy nature, moves: blast burn/flamethrower/eruption/fire blast~ (they won't learn more moves and the level doesn't matter to me considering I will just level them up to 100 either way)