Originally Posted by
Nahela
In my opinion, as it stands right now, there's absolutely zero reason to upgrade to T20 unless you're going from something like LFR/N T19 to H/M T20.
The talent choices required and the enormous survivability/dps losses from foregoing 4pc T19 are simply not worth the extremely minimal bonus you get from T20. Supposedly they're going to tune T20 sets before Tomb actually releases, but right now you're better off just rolling the dice for TF'd T19. The ilvl gap required to make T20 better is enormous.
To put it into perspective, T20 is a combined 1.75% damage reduction if you don't pick up every Sigil talent. With all of them, it's a max of 7% with all leaps used exclusively for sigil and perfect micromanagement of the debuff. You get double that (or more) in phys damage reduction with T19 4pc, in addition to the gigantic DPS gain from using Razor Spikes, all without sacrificing mobility or having to micromanage a debuff. Sure it's magic vs. pure physical, but 5-7% magic reduction isn't making or breaking encounters. Permanent uptime on your 30-40% phys damage reduction, however, will.
Again, I expect that the T20 values will either skyrocket or be completely redesigned, otherwise you're looking at rolling for TF'd T19 indefinitely (along with numerous other specs in similar situations).