I used to live in California and am currently living in Allen. I've been here for about 10 years now. Both cities that you mentioned are wonderful to live and good for family with children. I would say both cities pretty much have the same pace and nice neighbors.
Feel free to connect with me if you have any questions. I think there's no better way but to connect with someone who has lived in both areas to assist you. My references are available upon request or you can check part of my client's endorsement at LinkedIn.