I find Master Poisoner to be the better choice on this tier. MP + Wound Poison + Shiv can make enemies feel bad.
I also prefer Vigor. Each talent on this tier has it’s pros and cons. I like Vigor because it ensures I have enough energy for my burst opportunities.
As for the other two specs. I won’t comment on Outlaw because I don’t play it. However, Subtlety needs a do-over. It has a clunky feel and the damage is weak.