West >>> East Halls.
Also ask for a Living Learning Community for engineering or science, or a quiet floor or “healthy living/substance free housing” . note that substance free doesn’t mean you can’t party - you can party all you like, just not in your dorm room and your floor will always be party-free (best of both worlds in my opinion, since you’re sure not to be kept up till 3 am before a midterm as can happen in East.)