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Garchomp is THE mon to take to battle facilities but you can't really find it during usual playthroughs.
Bronzong is just good if you can get it.
A lot of people used Magnezone in BW2 because you find Magnemites very early and it's good against Roxie.
Togekiss in HGSS but Idk how early you can get the stone
I think I used Roserade and Froslass in ORAS but again I can't remember how early you get the evo stones.