Hunters are better solo levelers, but Druids have a far better job of introducing you to the game and all aspects of it.
Druid pros:
1) Can do all 3 roles of healing, tanking and DPSing
2) Only class that can resurrect in combat
3) DPS roles include both ranged caster and melee DPS
4) In much higher demand for groups
Druid cons:
...
Being in a form constantly, you usually don't get to see your gear much?
Hunter pros:
1) Fast solo levelers
2) Easy to learn and play
3) Doesn't get asked to be the healbot for every raid
Hunter cons:
1) Night Elf Hunters carry a terrible stigma
2) Hard to get invited to groups, as there is both a surplus of Hunters and DPS
3) Bland at 80 (personal opinion)