Originally Posted by
Akylios
Right now it seems like Paladins are tuned much more strongly than other tanks. If you want an 'easy time', pick a Paladin. (as with all tanks though, just picking a certain class won't change the fact that you actually need to know your stuff to play them effectively)
That being said, all tanks are viable, so there's really no reason to drop your monk unless you really want to.
[edit]
While all tanks are viable, if you plan on going 25m heroics, I would advise against picking a druid tank, unless you're looking for a real challenge. The druid dodge mechanic seems to lend itself much better to 10m raids than their 25m counterparts. (general tank dmg is much, much higher on 25m than 10m, so if you get bad rng on dodges on 25m hc, you're going to have a bad time)