Force_of_Nature
[12] Conqueror
I haven't really tried Ayane. I'm not particularly keen on her move list. So I'm not sure what works or what doesn't. Most of my Ayane experience is from dealing with players who often just ram through different attack strings without much thought. They're annoying to defeat sometimes.
I've played with a player named XDest and he has an absolutely phenomenal Ayane. With Ayane focus on her high crush attacks (4P & 6P) and 3H+K or 3P for zoning, along with BT mix-ups to keep the opponent on edge. She is very dangerous from BT and can fuck up an opponent that doesn't respect her. I will admit that she takes a lot of getting used to since her mixup game is unorthodox like Brad Wong's, but she is very rewarding. 66KK4 is still amazing. If you're dealing with buttonmashers, liberally use 2P, 4P, or 6P along with 236K at range.
With Hitomi, you don't actually need a lot strings. You just need enough mixup to discourage counterholds or punishment. 3KP2K, 6PKK and 7PKK are great (note that you can delay the K's if you want to finish the string). I also love 3H+K, 2H+K and 6H+K2K, and throw in some delayed 2P+KP's, P+KPPP's and 4PPP's for good measure while mixing up with her amazing 6T throw. 46K or Sidestep K is also handy in some situations. I throw in some 66KKP's too for pressure despite the unsafeness of the last attack so I mixup 66KKK with it or just run up and 6T. I played with AngryWorm a little bit and his Hitomi is incredible. Her 9H parry can fuck up alot of characters (including Ayane).
Let me know who you decide on!