Problem with Chiaki Omigawa is, she can't act her voice. So, whatever anime you watch, she will still sound the same. So, I just keep hearing Maka Albarn all the time because she debuted with that voice. Not a problem, but it's gets boring, like Rie Kugimiya, no matter how lovely her voice is. It just shows how short her range for character is.
Unlike for example Chiwa Saito.
Who can act really outer left field like Motsu from NEGIMA?!, to a very hyper character like Aoi Kimi from Kyoukai senjou no Horizon, and to a very serious sounded character like Senjougahara Hitagi from Monogatari.
my favorite females:
-Chiwa Saitou
-Ayako Kawasumi (been following her since Ai Yori Aoshi and Sister Princess)
-Shizuka Itou
-Miyuki Sawashiro
So for me, I'm drawn to seiyuus that besides having their "trademark voices" can also change it to suit their character.