Generally speaking, the really good Led Zeppelin is what you don't hear on the radio. Many of the "radio" hits seem tired to me but I ever get tired of hearing the album cuts.
Led Zeppelin was one of the first rock bands I was to see in concert. It was the mid-70s and they were at the height of their fame. However, the mayor of the city of Boston "banned" Led Zeppelin from the city for 5 years and the concert I was to go to was cancelled. Never did see them in concert which is a shame because so little concert footage of this band exists today.
Though panned by most fans, my favorite album was their last proper one - "In Through The Out Door". A few years after the band broke up, Robert Plant released a single called "Big Log" which is one of my favorite songs of all time and gives a clue as to where the band was heading musically at the time of Bonham's death.
Bingo
“In Through The Out Door” is one of my favorites too. It’s synthier than their other albums but it has some great guitar moments too, like the solo on I’m Gonna Crawl.
That's true of a lot of bands. There are some great songs by Rush that never get airplay, probably because they're 10 minutes long.
Journey had some great material pre-Steven Perry, but you NEVER hear any of it on the radio.
And when was the last time you heard "Shine on you Crazy Diamond" in its entirety on the radio?