i tried all the top specs on elitest might just be my gear 4/5 val turning tide.but affliction still seems best dps for ulduar i mean.
1.more health back=more survival
2.DOTS CRIT= OP
3.with glyphs this spec is amazing still maybe better
4. ROTATION A 3 Y/O COULD DO.
if your guild is downing bosses in uld. and you think any diff. id love to hear your prospective otherwise affl. is still the best raid dps spec IMO.