I just hit 70 but made sure to buy the "BiS" STR right side items when I read that "good" tanks needed to use them. With that said, I have a VIT set up and a STR set up and I try to ask the heals what they prefer. I tend to adapt and enjoy playing as a bulwark and a stabby tank all the same. I find that I VIT for most pugs but STR it up when I'm with FC healers who can hack it. I'm alright with either or. /shrug