I agree with Brigantium and particularly like the Rainbow '80 version. There is just one thing I like more in the Live after Death version : the "Keep you distance..." passage and the guitar bit that comes before. The guitar sound is great and the lines are sung differently with a subtle variation that sounds great.
Unfortunately, all the times I've heard this song live (I mean, mylself attending the gig), most of the instrumental part was ruined by Bruce tricks.