Best tank char?

[Occhidiangela]

Add a touch of Cyclone Armor to absorb elemental damage. Depending on how you equip him for Pure tanking the Werebear can get some damage absord and lots of resistances and -MDR -DR. With the immense HP bonus, DR bonus, and the ability to toss a Minion Grizzly around to 'distract' the foe, and Shockwave, I'd have to call the Druid the better Tank.

Maxing the Barb's defense and HP by maxing

Concentrate
Iron Skin
Shout
BO
A few points in Natural resist
Uber Armor Class
Shield(Pick what to socket with and why)

You certainly do get a hell of a tank. The way I see it, the Tanking function involves both absorbing damage and avoiding attacks to the party in the first place. I'd say the combination of Shockwave and Grizzly makes the WereBear Druid the slightly bettter tank. Equipment now becomes the driving variable.

YMMV. :)

Another excellent tank is a Javelin/Shield Amazon whose avoid and dodged are maxed. She rarely gets hit, and needs easily arranged resists and maybe some absorb to take care of elemental attackers. Toss in the Decoy and Valk about to make the attackers choose targets.

Best Tank Versus Diablo and Meph?

IMO, a Paladin with max resists (Easy to do with 4PD shield), Hotspurs, and a little absord/-MDR/-DR for good measure. Toss in a dwarf star and a ravenfrost and thundergod's belt . . . and I think you could stand there all day with even modest leach against either.