Since you are the one who will be working with it, I'd let how I feel about each fabric determine whether I would keep it or pass it on. Do you like the feel and look of the fabric? If so, use it!
I'm still working through four wonderful boxes of scrap fabric that was gifted to me recently. I am going through every piece and sorting it. Many, many pieces went into my 'take to thrift store' pile, simply because they felt horrible or were really ugly to my taste. Be good to yourself as a quilter and only use what you enjoy working with!