I'm in the midst of buying my vegetable and herb seeds for the coming season

and could use some advice.
Last year I grew "Sweet Basil" from Territorial Seeds, but it seemed a little harsher than what I expected, not terribly "sweet." So which kinds of basil do you folks grow and cook with and why? And, if you work from seeds, what is your source?
Also, I do intend to try lemon basil. Does it work well in tomato-based pasta sauces?