I think Agility Metagross' are beast.
If you get an Adamant/Jolly nature Metagross, with an Agility set up,
Metagross can almost demolish anything that comes in.
Metagross really is a great physical tank, but why not make that tank super fast?
A great moveset l use is:
- Meteor Mash
This set works well for me, but the only problem is that l always have trouble getting a chance to set up an Agility, since Metagross is already slow, most other Pokemon will outspeed it.