Still trying to wrap my brain around 6th ed, I find writing lists helps a lot. Not saying pure TEQ makes for a good list necessarily, but I do really want to build this list.
Primary Detachment: Dark Angels
Belial, Master of the Deathwing
5 Death Wing Terminators, all Thunder Hammers and Storm Shields, Cyclone Missile Launcher
5 Death Wing Terminators, all Thunder Hammers and Storm Shields, Cyclone Missile Launcher
5 Death Wing Terminators, all Thunder Hammers and Storm Shields, Cyclone Missile Launcher
5 Death Wing Terminators, all Thunder Hammers and Storm Shields, Cyclone Missile Launcher
Secondary Detachment: Grey Knights
Ordo Whatever Inquisitor
10 Grey Knight Terminators, 2 Psycannons, 2 Nemesis Daemon Hammers, 8 Nemesis Force Halberds
10 Grey Knight Terminators, 2 Psycannons, 2 Nemesis Daemon Hammers, 8 Nemesis Force Halberds
Combat Squad the GKT, now you have 40 scoring TEQ in eight units. This list really shouldn't be able to shoot another army off the board, it needs to mop up in CC. But, 20 TH/SS Termies, soooo yeah.