Crothian said:
Path of Swords is a superior book to S&F. It's not even close. The only thing I would have liked to see in Path of the Sword was the magical side of the Ranger. It's an area few people have ever covered, let alone done that well. With luck when Path of Magic comes out (Early September I hope) I'll be saying it's better then T&B.
MotW is my favorite book. I'm very partial to Rangers, and it has great prestige classes for them. The spells are more orignal then in other products, as well as useful. It has a wide selection of feats geared toward Barbarian, Druids, and Rangers. Many are too class specific for me and too combat oriented, though.
I agree that the Path of Sword is superior to S&F, S&F is still an nice book. The rest of the WoTC books are nice to have.
As far as the Path of Magice it complements Tome and Blood more then overlaps. Lots of new stuff that is usefull along side of Tome and Blood.
The Path of Magic does not compare because it mostly covers different things. You should have both.