I would second the Brooks for a very comfortable saddle. I have one that is 28 years old and others that are newer. Break-in is not as bad as some like to say and you can even buy one that comes somewhat softened. They are great for touring and long distance riding as well as commuting. They are very heavy, leather and steel. Even the ti ones are heavy. I have cut the skirts off a few to say a few grams.
For a good lightweight saddle, I recently discovered the line of saddles from Charge, a British company with very reasonable prices. The Knife is their lightweight "racing" saddle. I have ridden my Knife for a year now and my back side is very happy. The price is about half the "Selle" saddles and the product very well made. Worth the risk for me. It was rated 9/10 in Cycling Plus.
Wiggle.com, a British cycle superstore, carries them and is FPO AP friendly.
