I'm currently a first year at ICO and it's amazing here. I've not visited SCO but I've heard great things about that institution as well. The course load is ( I would imagine) heavy at any of them but the professors are quite helpful in explaining topics and encourage questions and are always hosting virtual or in person time to help students who need guidance. If you plan on practicing in a bigger-ish area, Chicago might be a good place to attend as their is a large and diverse group of people that visit the IEI, which, is attached to the school. So, it would expose you to several different types of patients you could encounter when at a practice.