Specs Latios is extremely powerful. I use Psychic/Trick/DracoMeteor/Surf and it works pretty good. With a bit of scouting and prediction you can trick Blisseys which is, oh god, good ^_^
Why do you use Psychic, rather than Dragon Pulse? Both have base power 90 and STAB. Both are resisted by Steel types. Psychic has the added downside of being resisted by Psychic types and dealing no damage to Dark types. Especially given that three of the most common steels (Jirachi, Metagross, Bronzong) are Psychic/Steel and thus double resist Psychic, and one of Latios's biggest counters is Tyranitar, who is immune to Psychic (and thus gets a free Dragon Dance or retreat-boosted Pursuit), Psychic seems like a Bad Idea.


















