The series you're talking about is The Elder Gods, and it's his newest one.

Elenium (diamond throne, ruby knight, sapphire rose) is probably my favorite.

God, I LOVE the Belgariad and the Elenium! My favorite characters are probably Durnik and Garion in the Belgariad, and 'Zakath and Cyradis in the Mallorean.

Why didn't you like Polgara?