The latest pedals from Rocktron cover all the bases. If it's full-on metal you're after, then the Boutique Series (£135) should cater for all your needs, and with names like Third Angel Distortion, Black Rose Octaver and VII Deadly Sins Auto Wah, they should fit in any true headbangers' set-up perfectly. For those who prefer their effects of a more traditional ilk, the Reaction Series (£95)should do the job. With their 'rugged metal slim form chassis' maximizing space more experimental guitarists can line them all up and still have room for a tuner - the range includes Chorus, Digital Delay and Phaser.
See www.rocktron.com for more details