I like
Sonya (I had an aunt named
Sonja) and
Sasha is nice although I see it more as a masculine name than feminine. I don't like
Sveta at all. It makes me think of sweat and sweating. I would pronounce it sveh-tah. Svay-tah doesn't make sense and I think it is very unattractive. Don't like
Anya either.