I'm having difficulty finding any particularly 'positive emotion'-music in my collection! Based on what you posted and your responses to other suggestions, here are a few that may be worth checking out:

Bad Religion (solid pop-punk, three part vocal harmonies, highly intellectual to boot), Arctic Monkeys, At The Drive-In (highly charged, very energetic, somewhat anarchic), Ben Folds (modern piano rock, very rockin'), Blue Oyster Cult (not a million miles away from Journey), Kate Bush (80s singer with a unique voice). You probably won't like all of these, but some might be worthwhile.