It depends on what you like. Every Pokemon is different.
Typhlosion Gyarydos Ampharos Espeon Dragonite Tyranitar
Has to be Blue, In my opinion.
I guess it depends which Pokemon you think is best. There are an equal amount of advantages and disadvantages for each possible combination of starter Pokemon in mystery dungeon, there is no such thing as a "best pair."
squirtle and pikachu will be the best
Pokemon mysery dungeon 2 and Pokemon pearl-diamond
garchomp and altaria or charmander and mudkip
I think its charmander and riolo
The best Pokemon you can get is mew. or you could get something in buried relic mew is in there
Youtube would be the best
Totodile, with partner of Torchic
team rocket
Pokemon sapphire for starters but on the main Pokemon Diamond and pearl Pokemon Mystery Dungeon Explorers of Sky is.