Out of the choices up there I say Hinata
Hinata's gental fist defeats all the other choices in close range combat (Ino's combat close range is assumed to be below average, Sakura only has her strength working for her not so much actual skillful techniques, Tenten is a weapons expert more then a taijutsu we haven't actually seen her taijutsu abilities for that matter either). Also she's flexable (men love flexibility in a woman lol) and her chakra control is amazing, just as with Sakura. Really Sakura's her only compitition I see. Sakura relys on her chakra for her strenght which Hinata's dojutsu and fighting style can combate to make her attacks worthless. Also that means no medical ninjutsu to help her and she only has poision (if she uses it). Hinata also has her chakra needles (although only showen in the first part, she has that as a ninjutsu technique) and some mid ranged taijutsu techniques that can combat Sakura and the others.
However there are more kunoichi who I see as stronger for that matter, Kurenai and Shizune I see as stronger then those choices, Mito although she's dead seems like she was the most powerful kunoichi in Konoha's history.
