Probably MKA Sub since it's the latest in the story, therefore he's at his strongest.

MKA noob beacuse he original Sub-Zero

But alas, Noob has no ice powers, so he technically isn't Sub-zero V anymore.

I would have to say his MKA form as well, since he is at his strongest there.

technically he is Sub Zero. Ice power or not, he still sub zero

i agree with the guy above me, just cuz he cant freeze no more doesnt mean he isnt sub-zero anymore, like if u lose an arm your name doesnt change.....
well back 2 the subject i think it would be the MKA sub-zero as well since for the past two endings of his it states he is getting stronger and is now at his strongest point

Meh, I thought the MK:D Sub-Zero was the coolest (mainly his alt), so I'll go with him.

i just think mka cuz as the games go on he is learning more and practicing more and gaining more knowledge from his students he teaches cuz hes a grandmaster