Illinois Wesleyan University excels in the education aspect. The professors are amazing and very engaging. They are experts in their fields and know exactly what they are teaching. The materials for biology, for example, are not easy to understand if you have to analyze the text by yourself. However, the professors tried their best to teach the materials in a way that students would understand and questions are welcome (I have yet to sit through a lecture without at least tens of questions). The professors are also readily available outside the classroom and I have never experienced major conflict when scheduling a talk with them. The professors are also extremely friendly and you'd be amazed at how fast you can connect with them.
The social life aspect at IWU is also, for me personally, very ideal. The small campus allows you to actually meet and connect easily with your classmates and roommate(s). It's not hard to know the whole campus and make connections. At IWU no student is just a number and befriending someone is as easy as sitting down with them at the cafeteria. The sport teams and Greek houses are also extremely interconnected and I found myself having twenty new family members over at Kappa Delta.
Overall, IWU will give you a great, well-rounded college experience.