Tyranitar (Full Revamp) +

[Caelum]

I actually have used the Choice Scarf set to great success on both my Standard and Suspect teams, and I am kind of surprised that you left out Superpower as an option.

Its main purpose is to allow you to OHKO other Tyranitar, especially CBTar who OHKO's you with Earthquake (While your own Earthquake fails to OHKO). It also allows you to 2HKO Blissey, Snorlax, and Heatran with one set. It should be added to the last slot, IMO.

I added it to set comments on-site.