Probably/Definitely buy as single:
Collective Soul - Shine
Great White - Once Bitten Twice Shy
Iron Maiden - Wicker Man
Living Colour - Cult of Personality
Quiet Riot - Bang Your Head (Metal Health)
Shinedown - Diamond Eyes
Elton John - I'm Still Standing
Rick Springfield - Jessie's Girl
Tears for Fears - Shout

Probably not/definitely would not buy as single:
Barenaked Ladies - One Week
Foster the People - Pumped Up Kicks
All-American Rejects - Kids In the Street
Blink-182 - Always
Fall Out Boy - A Little Less Sixteen Candles
P!nk - Raise Your Glass (for my mother of course)