DK all the way.... Medium armor more fun if you ask me and with 3/4 mitigation compared to heavy... Makes sense... I think either Breton or Imperial might be better in terms of best tank race... I can't recall which one was the best but Nord is deffinetly #2.
Dodge roll is so much fun!!! Great way to *** people off.
Well... I'm not sure what Rohaus is on about saying that medium armour has nearly as good protection as heavy or saying a breton is a good race choice for a 2handed stamina heavy armour user.. but anyway...
DK is indeed a fairly good around class for whatever you're doing. Nightblade has a few tricks though with twohanded style combat (including +30% stamina regen all the time) as well as being able to fear people and increasing crit damage plus tons of other things.