Priest talent trees for a party. I need advice.

Heal. Holy or Discipline what's better? What better to take a profession and skills? Please give advice with the choice of talent trees.
Haitharn wrote:You can easily heal all dungeons up to lvl 60 as shadow spec. Go shadow up to 60, it'll help you level much faster than any other spec. I reccomend this build. http://db.vanillagaming.org/?talent#bqMhsVZZx0xpMxRt
Haitharn wrote:You can easily heal all dungeons up to lvl 60 as shadow spec.
PanTheSatyr wrote:Is it viable to heal BRD as Shadow?