I haven't listened to Priest Live in decades. It never really sounded legit to me. Just pulled it up on Spotify. The crowd noise sounds so fake.
That video/time period was really the tipping point for me; they SOUND so good still, but everything else just got so... comical from that point forward.
I listened to Sin After Sin and Killing Machine (Hell Bent For Leather, here in the States) this weekend. Sin After Sin is SOLID. I don't remember it being that good, to be honest. There really isn't a duff song on that whole record. Personally, I LOVE "Last Rose Of Summer"; it has a Little Wing/Catch The Rainbow vibe, and that's a great vocal from Halford.
Tim, not that it matters, since they aren't that different, but there are two versions of Diamonds and Rust; one was recorded during Sad Wings, and they redid it during the Sin After Sin sessions. Both have been released, though. The song was so obviously about Bob Dylan, Priest cut the middle two verses because they were very specific to him. My personal favorite is the bridge; the image of the "breath" hanging in the air is strong.
Here's an amazing performance by Rob (thought Travis looks ridiculous twirling the sticks like it's "Hell Bent For Leather"):
https://youtu.be/mIC7KQPDuDcHere's another:
https://youtu.be/6wGlbYpBQdQ Rob Halford is so good on this as well.
Here's a third (which is good, but doesn't really hold next to Priest's and the original):
https://youtu.be/ERs0sudtF3gSorry for the overkill, but if you're interested in Joan Baez, early on, Page and Plant bonded over her version of "Babe I'm Gonna Leave You", and Zeppelin used her version as the template for their own (you can hear it in the musical accompaniment), even though she didn't write it originally.
https://youtu.be/2luQaNDo--Q