People are actually saying Velvet Sky? Are you kidding me? She's absolutely terrible. Really bad worker, cannot act, cannot play a babyface to save her life and cannot cut a promo as a face whatsoever. She is not a believable hero whatsoever. As a heel she's tolerable because it comes more natural to her because she does come across like a bitch. She had a decent hateable character and could cut a promo within the confides of it. But other than that, she's terrible at nearly everything. She got ahead because of her looks which is extremely obvious.
The actual best KO's of all time in my opinion:
Gail Kim: THE BEST. This girl can work with anyone, has tremendous matches. Equally as good as a heel and face shown by her work with Kong as the underdog hero and against Taryn Terrell as the veteran taking liberties with people. Very good promo cutting, has a really good character right now and is always entertaining as hell. She is also not afraid to put anyone over, absolute professional as shown several times this year. Generally LOVES THIS BUSINESS unlike some who are there because they want to be famous *cough* VELVET *cough*. Love this woman.
Awesome Kong: This is one badass chick right here. Didn't get ahead because of looks obviously but super scary. GREAT look, tremendous intimidating presence. Great worker, one of the best female workers in the world. Fantastic as a monster heel especially. Could have easily been a top player for the WWE divas if it weren't for unfortunate circumstances.
Mickie James: Everyone knows how good this woman is. I shouldn't need to explain. Once again, tremendous worker. Really good promo girl, is very versatile and flexible as shown by her gimmick and character work. Can play a face and heel really well (especially heel). Without a doubt one of the best ever let alone in TNA.
Hamada: Most underrated. Unbelievable worker right here. Without a doubt, one of if not the absolute best in the world. That alone gets her a spot here.
There are some other good ones like Tara, Daffney, ODB (before she got the comedy gimmick) and Roxxi who just miss out for me.