Slade never really made it in the U.S. They did OK, but nothing compared to their native U.K. The problem was their mixture of Glam and proto-Punk made sense in the U.K. In the U.S., it just confused people. Slade was the British Hard Rockin' version of the Kingsmen. Their failure was they never had their own "Louie, Louie" although "Cum On and Feel The Noize" and "Mama Weer All Crazy Now" came close.
Slade had a two guitars, bass and drums line-up that featured Noddy Holder's raw vocals. On top of that, Noddy Holder is a great Rocker name. After limited success through the late '60s Slade came to power in the U.K. in '71 with a string of hits. It wasn't until the middle of the decade that things slowed down. In the U.S. they were known and that was about the extent of it. Efforts to break them in the U.S. were met with cool indifference. Tough market. Slade's appeal, and probably curse, were simplistic songs driven by power chords. Concise anthems to repeat over and over again. Not a bad approach. Certainly Quiet Riot thought so. In the early '80s they covered "Mama Weer All Crazee Now" and "Cum On Feel The Noize" with the latter doing much better chart-wise.
At the end of '88 the Slade went their separate ways with Holder, Lea and Hill staying in the music biz.
If you can find it, a Slade "Best Of" or Greatest Hits" package is the way to go. A couple possibilities include "Sladest" and "Keep You Hands Off My Power Supply." Make sure they contain original versions of "Cum on Feel the Noize" and "Mama Weer All Crazee Now."