Probably an unpopular opinion, but Starstrukk > Starstruck
Love both, but I was obsessed with Starstrukk since the solo version was released back in 2008. Yes, I willingly listened to 3OH!3. When I found out they had a collab on Animal I was so thrilled.
I kinda prefer the solo version to the Katy version actually, she doesn't really add much to the song. I guess her verse is good, and she stuns in the MV, but the solo version slayed me so much back in the day.