The state of tanking - class recommendation

Good day,

As far as I am concerned, DK has always been a top choice for tanking. I am leveling mine as well, though, I've heard some good things about warden being able to handle tanking role pretty effectively. Therefore, I would like to ask how is Warden when compared to the DK in terms of PVE tanking?

I believe some easier, non - trial content can be finished with multiple combinations of class-role, but how is Warden's tanking in the very endgame? Does it have its place, or should it be forgotten in the PVE at all?

Thank you all for opinions.