favorite old/new SC unit?

my old one is the mutalisks. if you know how to use them they can be invincible but if you don't know how to use the unit they can all die in 2 seconds due to storms

my favorite new unit is the tripod thing in protoss(i forgot what it's called). It's so sweet that it can step over cliffs n stuff. 

I loved the carriers.....

I really cant decide on a favorite new unit...The tripods look cool, along with the motherships....in fact everything looks awsome. 

Dark archon. can mind control enemy workers to build their buildings and units

/thread