Metal Wars: UFO vs. Scorpions

England's UFO and Germany's Scorpions are hugely responsible for giving metal a sense of melody, tunefulness, and sophistication through the '70s—moving it beyond the blues, thanks in part to Michael Schenker's blistering lead guitar work, which alternately graced each project. Both bands have rocked ever since, but which one has rocked more like a hurricane? You decide.