Although, if you're including Powerslave I'd love to recommend the official Ed Hunter version that was released on one of the Wicker Man singles, that's by far the best. I can't find it on Spotify though.
I have one of The Wicker Man CD singles, but the b-sides are Futureal and Man On The Edge from the Ed Hunter tour. (man, what a tour seeing Iron Maiden in a theater).
The Live version of No Prayer isn't on Spotify, but I think I have a copy of it somewhere.
I actually like the Flight 666 version of Powerslave. Not sure though.
Also, regarding Live At Donnington, I'm probably going to use that or A Real Dead One for The Number Of The Beast, as I thought them playing it in the second spot was a great call. Not sure though.