CRM for Unreasonable Hospitality

I am reaching out to you guys to help me find a CRM that can help me deliver exceptional customer service. After being inspired by the book Unreasonable Hospitality, I want to be able to wow my clients with an unforgettable service experience. Whether it be to send them unique gifts on their wedding anniversary or to send their kids a special gift for their first day of school. In order to do so, I will need a CRM that can document a lot of information. At this point in my career I am more focused on client experience than the sale cycle. Do you guys have any recommendations for client experience focused CRMs?