Which symbiote is the strongest (spiderman)?

it all started with Venom, however currently, in the world of spiderman, the idea of the symbiotes have expanded far beyond Eddie Brock. however noone seems to know how is overall the strongest. so im asking you, who, in the mainstream spiderman universe is the strongest? and im asking in all aspects, not just strength. such as speed, intellect, brute strength, special abilities, etc.