go to colours in Ideabooks on this site and you can read about the whites that designers use & why.

For best effect, important to use different finishes on walls, ceiling & trim

Decorators White is often a great choice as it doesn't appear yellow or grey in most rooms. It's a nice pure white. I would suggest getting the large paint chip from your local store first and looking at it in the space at different times of the day to ensure the white is crisp and what you're looking for as paint will look different in every room.