Comparing Dickinson and Di'Anno is like comparing Annihilator's Randy Rampage with Joe Comeau. Joe is a better singer per se, but Rampy' s vox rule in the attitude department. I must disagree totally with Hawk - Di'Anno is NOT even close to Dickinson in the singing department. Dickinson can do Di'Anno's stuff, but Di'Anno can't do Dickinson's stuff. While I can go with the "attitude" argument for picking Di'Anno as a favorite, to say that Di'Anno is a better pure singer with better range is a bit of a stretch.