Bear or Lion?

I would lean more towards WAR. Just because they're a bit more fluid and 'fun' (subjective, i know) to play.
They are a bit harder to master because of the number of debuffs and counters you have to babysit.

Whilst Pallies are just slightly more reliable due to their low complexity and high number of cooldowns. And personally i find pld a bit more robust when it comes to recovering from missteps (hallowed ground).

I have both WAR & PLD - they're equally geared. And use the WAR 95% of the time.
Though I tend to use the PLD when im trying out new content that im not familiar with (or if i want to run a dungeon without too much thinking).