I was thinking a no-constructs Teron - but given that I have no personal experience with the fight, (parses I saw were ~6 minutes, I believe..?) I'll defer to those that do have such experience.
At the stated level of gear, Teron takes about 3.5 minutes or less, which is probably good enough. Gurtogg isn't really a good choice, since with the tank juggling going on, threat is a serious concern.
I do hate to reiterate myself, but once again, with the latest version of one of the spreadsheets (184.108.40.206), tri-spec (11/27/23) is about 1% better than combat swords at the highest gear levels.
Reading the thread, I note that though he's been saying this numerous times, it has not been addressed. I can confirm that using the default gear and buff setup of the 220.127.116.11 DPS spreadsheet, 11/27/23 Hemo (4/5 Sword Spec, 2/2 DD) does out DPS 20/41 Combat Swords if you count the raid debuff.
It has been addressed. It's been stated numerous times that the spreadsheet DPS figure assumes every hemo charge is consumed. It's been stated numerous times that it is worth having one tri-spec hemo rogue in the raid. The point of contention that none of the gut-instinct-go-with-your-feelings idiots in this thread seem to be able to grasp is that combat swords is inarguably more personal DPS.