
Well this is a somewhat worthwhile question now after the patch, time was immo was your only choice because of its utility and monstrous dps output. Don't get me wrong, there are those out there who specced differently even before the patch and were more than formidable, but immolation was the default so to speak. After the patch there is a sizable drop off in damage output from immolation, coupled with the immolation bread and butter ability detonate being reduced in damage greatly, it seems immolation is no longer the specialization of the masses.
So which spec to go for now? Well imho I believe it depends greatly on what you will be doing. Will you be participating solely in ORVR, taking keeps and/or defending them? Roaming 6 man's looking for those ever elusive epic fg vs fg encounters? Will you be a PvE fiend farming every lair and dungeon you can find waiting for the glorious encounters when Inevitable City gets it door's smashed down? Constantly hammering scenario's to get to R40/RR80?
Obviously each spec is viable for any of the above, but some are tailored better for certain activities obviously. Ill try get down a list of pro's and con's for each and where I think you get the most value out of your spec.
On a side note I understand that certain conclusions below will be stating the blatant obvious for some, but im going to put them out there anyway for those unfamiliar and/or just starting their brave journey as a Bright Wizard.
Inciniration
Ok well this is your first choice, the inciniration line. Basicly single target DD nuke spec, obviously there is far more to it than that, but you get an idea of what its like. While I played with this spec I have to say I had a lot of fun, absolute face melter with the right ability rotation and approach (Just dont think that you'll be takin down a heavy resist stacked Black Orc in one rotation :P )

For dungeons etc it can really shine. If you gotta group where one of your healers can absorb all your backlash and you keep a slot in your rotation for burnout you can really get a nice steady dps output of huge proportions.
In 6 man fg vs fg is where inciniration shines in my opinion. Really helpful for burning down that Sorc or healer first, which can be a little irritating with the other specs because conflag is too stationary and immo is too easy to heal thru after the patch.
Pro's :
Great direct damage spells
Can overload a healer with dps
Good PvE/Dungeon utility
Great spike damage for solo PvE
Con's :
Alot of stationary time
Limited utility in Fortress/Keeps attack and defense
Cast pushback from damage and interrupts via "out of range"
Well there you have it, my humble thougths on the inciniration tree. I had some fun, had some dissapointments, all in all quite a spec. As for whether to use it or not, I'll leave that to you.
Below would be what for now, I think is a viable incin spec:
http://www.wardb.com/career.aspx?id=11#15:41472:6:40:0:0:29:8207:563:8198:8199:14108:14109
Immolation next....


