Defense

'help defend'

Lunger:
depends on your class more than anything else. for most, you will want 
to use a defense.

rogue: parry
necro: none
pally: block
fighter: berserk
mage: none
shifter: suicide (password)
cleric: block
ranger: block

weight only applies to dodging. parry depends on the parry rating of your primary 
weapon and block depends on the blocking rating of the shield.

defense none is definately the preferred defense on a necro. i don't play 
mages but i'd assume no defense would be better there as well.