Garchompite vs Choice gear
I play doubles with defensive chip team and sword setup. Lead with Rotom-Wash and Speed Boost Scolipede. Currently BP to Argon but built a Jolly Landshark to test. Been going back and forth on Mega vs Choice gear, would love to hear other people's thoughts.
CB Garchomp is stronger, and in doubles, you'll usually have at least one target to hit with a powerful Dragon Claw. I say CB and use your Mega slot on something else.