I have to say, after a thread between me and Dakkotta over in the mage forum, i switched my two socerer lines from STR AGI to STR WIS for critz and increased base spell damage.
Since then i have parsed much higher in my raids but waiting for my spells to cast and come available again is almost unbearable after leaving the AGI line.
If it wasn't for my desire to beat out all those damn preditors and summoners, i would go back to AGI line cause i love to cast lots of spells really fast. I may respec again to make sure i didn't make other improvements that is effecting my dps.