Which of these 3 cases are the best?

My preference would be the Cooler Master 690. There are many cases available. Check out the new ones from Rosewill and save yourself a few bucks. The Black Hawk comes to my mind. The Antec 300 cools very well also, my favorite. Your cooler should be upgraded also. Xigmatech has come out with a new line of copper tube models including those for the LGA 1155 model processor. Used one on a i7 system and the results are very good. Sizes vary according to the width of your case. Add fans also when you upgrade the case. Link to shop. Hope it helps.