LMFAO, Womanizer sounds like what would happen if you threw Mike Jones and an air-raid siren into a blender, and not in a good way, anyones version is going to be better. Britney is a generic pop artist, and pop artists live and die by their songs. Which especially applys to Brit.
I don't like her version, it doesn't fit the song at all.
I think I will never get to hear a decent cover of Womanizer, the song is just the best as it is.