Coheed and Cambria-In keeping secrets-good Apollo one era. They got lumped in with a lot of mtv emo bands, but they were doing their own thing. Also classically the best line up(Josh on drums and Mic on Bass)
Megadeth-Rust in peace era. They were delivering heavier and more technical music compared to the other thrash bands(including mettalica). Marty Friedman, David Ellefson, and Nick Menza are the golden trio of the band. The fact that dave ran them off, is his biggest mistake rivaled only by his perpetual rage over not being in Metallica
The cure- Early 90s
The Smiths- 1985-86 when they dropped meat is murder and the queen is dead. Two classic albums imo.
Judas Priest- After they let rob halford go, the band was never the same. Even when he came back.