I am also debating this!! Such a tough choice.
Rush would be a great preparation for the real world! It's a hospital first and a university second, so it would be a bit hectic around the clinic but that could be a great thing! I was very impressed with the variety of the clinical faculty. It does have a rough class schedule, 15-17 credit hours per quarter!! I also don't like that there's not really a space just for the speech path students, you have to fight for study space with the other students there. Again, replicates the real world.
Northwestern is so hard to turn down simply because of its reputation. It's always been a dream for me. However, it's so so expensive I feel like I can't go unless given a scholarship. A professor I trust also told me to be carful of Northwestern because they just lost a bunch of faculty members..yikes!!