Pour some sugar on me....
Honestly, I don't care either way. Each band has positives, but they aren't my regular cup of tea. They aren't on my ipod or in my pandora mix.
However, I was suckered into going to a Def Leppard concert in VA and had a great time, much to my surprise. They were great performers and more. Also the band had "bought" the first two rows and donated them to the soldiers at Walter Reed and payed tribute several times to our American soldiers, even though Def Leppard is from the UK. I was in the fourth row and watched those soldiers sing, wave their crutches and prosthesis, and have a great time from their wheelchairs. For that alone, I'll vote for Def Leppard in your imaginary poll.