For third-party, I love and recommend Black Company Campaign Setting.
Yes, as a campaign book, it'll be quite a bit more, especially considering how much they fit in their -- the license was only good for one book.
Things I enjoy:
Mass combat -- on the company scale, where each squad is detailed/statted out like a PC, making it almost like PC on monster combats; or army scale, where it's basically a contested roll, and then you determine the percentage of the casaulties.
The magic system - You choose an effect, and other modifies, such as number of targets, number of damage dice, etc, and then you have a Magic skill DC to beat; then you take drain damage.
The lethality - natural 20s (not all crits, just nat-20s) have permanent effects on your PCs/NPCs, loss of limbs, fingers, etc. Little healing magic -- best use of Heal skill is to convert lethal damage to nonlethal.
The masterwork items -- awesome rules. When's the last time you've seen an item in a game that gave +16 to a Diplomacy check when given as a gift? Or a masterwork mace that does an additional two points of subdual damage since it's so brutal?
Sleepy and rambly. A big fat book for a reasonable price, I think; plenty to use for anything