Sathanas5
Lesee...sorcerors...
I'm gonna Say Combat Casting, Improved init., penetrations, And if you are going specialist (which I don't recomend) go spell focus too!

That's all been posted in this thread already. Read much? stare

Sathanas5
Complete Arcane is pretty cool...
So is Libris Mortis
But a real favortie of mine is FR's Magic of Faerun...That was the best Arcane SourceBook for a looonnnggg time

As much as I love the Forgotten Realms campaign setting, Magic of Faerun pales in comparison to other magic-related d20 sources. There are too few original spells, far too many spells which have lesser/greater forms [these types of spells reek of a lack of imagination], and it doesn't explain mageduels well enough to effectively incorporate them into a game.

Call me an a*****e, but I felt an urge to express all that.