Think the Lightmaps in DBpro are better than some games, particularly JK2 Multiplayer Version (yup still waiting for that patch RavenSoft
)
Gmax 1.2 with Tempest is good for levels and models, when they sort out the MD3 to load perfectly (if 1.03 hasn't already done this) then its probably one of the better options all round.
Plus its free, which doesn't matter unless you try to sell the game in which case you'll own id software $50k and Discreet $5k
MayaPLE also is outstanding for world development, and very good for low polygon character due to its shared characteristics with Milkshape.
there are a few more tools out there you can use for free if you don't charge for your game.
Anata aru kowagaru no watashi!