What US cities assume middle-of-the-road personalities between the east and west coast?

I love both the east and the west coast. They are both absolutely beautiful, and the culture is breathtaking. I am too relaxed for the east coast hustle and bustle, but I am definitely no hippie. I have never had too much interest in the Great Plains, as it is more flat land rather than mountains and forests. Do you guys have any recommendations? I am open to any suggestions, both in the east and west coast! Thank you so much!