SIU Credit Union is highly regarded for its excellent customer service and knowledgeable staff. Many customers have praised the friendly and helpful nature of employees like Crystal and Delise Thompson, who have made processes such as opening accounts and securing loans quick and easy. The Marion location has received specific accolades for its efficient service, with clients reporting smooth experiences and effective assistance. Customers appreciate the range of products and benefits offered by SIU Credit Union, making it a great choice for both personal and business banking needs. Overall, SIU Credit Union is recommended for its professionalism, responsiveness, and supportive staff.