Originally Posted by
Simca
No, honestly, Intellect > Spirit > Haste > Crit > Mastery.
Spirit is always superior to Haste.
Look at the high-end Paladins in top guilds. Every single one of their pieces has Spirit on it. They're making the choice of Spirit/Mastery (well maybe not Spirit/Mastery, but at least always Spirit/Crit) piece over Haste/Crit piece every single day of the week. The reason is that you can never have too much Spirit. The more Spirit you have, the more Divine Lights you can cast.
I'm honestly not sure why people around here started valuing Haste over Spirit after arbitrary point A, but I believe that is in error. Spirit is always, always superior to Haste. After a certain point, Spirit starts becoming a throughput stat, so that you can sustain your Divine Lights.
Divine Light spam is the key to success, along with keeping your mana low.