BATMAN 400 is a favorite of mine also.
A mix of guys like Perez, Lightle, Byrne, Cullins, Sienkiewicz, Art Adams, Kubert, Steacy and Bolland. As I recall, it also had an introduction by Stephen King!

I liked those early 1980's anniversary issues because they often had not only a good representation of the current hot artists, but also had old-school Silver-Age greats like Kubert, Murphy Anderson, Curt Swan, Gil Kane and Infantino.



That captionless back cover is almost suitable for framing!




Another of my favorites that definitely ran the spectrum was DETECTIVE 500. The first story, "To Kill a Legend" by Allan Brennert and Dick Giordano made it into THE GREATEST BATMAN STORIES EVER TOLD. Published in 1981, DETECTIVE 500 was among the first of the great "artist jam" issues. Jim Aparo, Infantino, Simonson... great stuff.