Dickinson is an ignoramus. He got all uptight when he was advised not to go around doing his jingoistic waving of the union jack during aces high while playing in Dublin. He then proceeded to lecture the Dublin audience as to how upset he was before they did the song - without the 'fleg' being waved in our faces - muppet!.
In my view, having seen Iron Maiden live twice, at Donington and in Dublin, Di Anno was a far superior vocalist in his prime. Very sad to see how he has gone since 1982, and now in a wheelchair.
Dickinson, when singing live, screeches in the higher ranges. I wouldn't bother going to see them live again.