A mix of the promo CD has leaked and i have to admit Circus as a track sounds the least impressive.

 

Everyone has told me the complete opposite. :o

Circus sounds better than Womanizer to me! :D

 

Same way I thought POM was better than Gimme More!

I think Circus is my least favourite of all the leaks tbh. But not heard enough to make a real judgement, I'm thinking.