Which one do you prefer? Isabel,Matilda or Cordelia?

My favorite is Cordelia. I think of Isabel as a dark, frizzy haired person that is very intelligent, but not very sociable. Matilda makes me think of the book "Matilda", and the genius child in it, and I would imagine Cordelia as being a slim, auburn haired girl with lots of freckles; a sweet child, but a little shy. This is just my opinion, so I would see what several people say--they may have wildly different opinions from me!