I can't call myself a Metal fan and not vote for Priest here. Rob Halford and the boys are awesome. I am waiting with Baited breath for their next release which is a concept album on Nostradamus. But These guys are part of the first four bands that people will use to label British Heavy Metal, the other names being Motorhead, Maiden and Sabbath. But for Priest you just have to listen to "You've Got Another Thing Comin"
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These guys are part of the reason that Metalheads have their use of leather as a major dress component. It is pretty hard to vote against them.
Frampton, I like he wrote the second best Love Song of All Time in "Baby, I Love Your Way" and he has a great ability to make music as well, he has verstility, I can listen to "Show Me The Way" anytime during the day and it is great. His Cover of Soundgardens "Black Hole Sun" is great.
But to reiterate I am voting Priest.