There are actually 3 places for consortium quests, the first being in Terrokar and Manatombs. The 2nd in Nagrand and last in Netherstorm. After you hit revered with the warbeads and netherstorm quests, it's faster to grind the zaxxis raiders south of Area-52 for their badges(every 10=250rep). Just be prepared to fight 2-3 at a time as many grps are linked and there are various pats, respwns, etc. And after patch there will be more quests...
Also heroic manatombs is great for rep as well(12-15rep per kill), and really not that hard except for last boss. You will need some shadow resist and tank will need 200+ SR for the 1st boss tho. Just ran it the other night with a tank that had 300+ SR and it was cake.