Hi,
I would recommend saying whatever is true. What you wrote in the resignation letter to the previous company, the same reason should be mentioned in the interview. Do not think of making an impression with the reason; there are other means to impress the interviewer, such as command over language, presentation skills, dressing up, body language, knowledge, and skills, as well as knowledge about the company, its products, business, latest news, etc. So, go ahead and face the interview with all the truth.