I had the Air Raid Siren at #12. Love Bruce. He has been a staple for 40+ years of consistently putting out great work and his performances are so energetic. I am comfortable with where I ranked him, but absolutely am fine with the forum consensus at #3.
As for Tate, obviously, as posted, my #1. I think the debate on his vocals are marred by the generation 10 years or more younger than me. Sorta like how Perry was the other day. Tate was other-worldly. What he did in the 1980s and early 1990s (1981-1992) pretty much established the metal voice that would be used by guys like Ray Alder, James LaBrie, Michael Kiske, and tons of other singers as time moved forward. There was no one else that sang as clean and operatic with that much power in a metal band. Halford wasn't as good, neither was Dickinson. Tate had it all.
His prime wasn't "short." A decade of delivering that vocal style, over long tours, night after night, and in the era where guys smoked a ton and didn't realize what they were doing to their voice, took their toll. I actually think Tate had a great resurgence in his voice in the early 2000s through about 2006. Sure, they dropped songs a half-step to help. But he sounded really good. Clear.
Tate's voice changed over time. A lot. When he started out, his regular voice was high. Very high. I know there's this debate whether Tate was a baritone or a tenor. Some experts pointed out he was a high baritone, and his style made it so he could belt out those stratospheric notes. But he was VERY borderline between a tenor and a high baritone, especially when you heard him in the early-80s. His vocal training by the Maestro David Kyle, while enabling Tate to really sing that high all the time was jaw-dropping, it's actually been shown as the years have gone by to hurt your vocals if you keep pushing. And Tate pushed, and pushed hard. The relentless touring, particularly what they did for Mindcrime and Empire hurt him. And it took him several years to get comfortable again.
No, he's never quite been the same, but that's okay. The smoking didn't help, but when you look around at Halford, Dickinson, and some of the others, current Tate is fine for where he's at. Not one of my current favorites, but all-time, Tate set the bar for operatic metal singing in the 1980s.