It depends on the drink for me. If it is water, then I'll put ice in it all the time. Coke, Dr. Pepper, or lemonade, I'll put ice in my drink from time to time. Everything else, no ice. As for the shape, I don't have any preference although when it comes to crushed ice, I'll only have that in the summer and when it is just really hot, any other time I would prefer to not have crushed ice.