I don’t have the experience on a lot of different systems or components to recommend what might pair up well with your Maggie’s but I will comment on Led Zeppelin. I have very early pressings of Led Zep I and II and when I want to hear something really loud they are many times in the stack of records that I line up. I have a combination of PS Audio, Clearaudio and Vandersteen in my system and have never thought those Led Zep pressings were anything less than fantastic. Maybe my system is the right combination for those records but on songs like Whole Lotta Love, The Lemon Song, and I Can’t Quit You Babe it sounds like John Bonham is in the house!