You will be screamed at no matter what you do. So don't let that get in your way. It is important to vote. Remember when people are screaming that at least you're sending a message because votes even for third parties are counted and when third parties start to get a lot of attention that does change what the major parties do. So don't worry about so-called wasted votes. They're never wasted. Sometimes you don't have a good option, but you can pick the best option you have.