Krist, I saw Iron Maiden in 1980 and they were absolutely incredible. Even then, you knew they would end up being massive.
Call me a heretic, but I still prefer Di'Anno to Bruce. Those first two IM albums - especially #1 - are still in my all-time favourites list.
To add - I also saw Sampson back in the day when BD went by the moniker Bruce Bruce. I've also seen Wolfsbane with Blaze singing. So for me, the IM singers are 1-Di'Anno, 2-Blaze, 3-Bruce.
The quality of the songs has arguably been better when BD has been in the band, but I've never really rated him as highly as he rates himself ?