There are positive and negative aspects to each dorm. You must make a decision based upon your preferences and priorities. Your academic and social life will not be solely determined by which dorm you are assigned to, and you will be able to make friends no matter where you go. Make sure you understand the rules and regulations of living in each dorm before you arrive. Some of them are rather strict and may catch you off guard.
The dorms have somewhat improved over the last several years. Air conditioning seemed to be one of the biggest complaints. Many of the dorms have working air-conditioners, as well as new windows now, which will pay off from August until the middle of October. Just because you request a dorm does not mean you will ultimately be assigned to that dorm. Since there is no perfect dorm, and none that can really be a huge pain, try to make the most of whatever situation you have and make new friends.