BIS Wizard. Is it worth it?

[avarantor]

For those of you who have done this, or theorycrafters. Is it worth equipping a wizard with BIS gear? Obviously a larger mana pool means more Velious Giant, and Dragon nukes.

I enjoy raiding on a wiz, but I'm an altoholic and DKP is always in short supply. It's either spend it on the Wizard or one of the other classes I play. The others being Ranger, SK, Necro and shaman respectively.