Looking for Merger Model Courses

Hi. Lateraling into an EB from a MM coverage group (didn't do a lot of modeling) and I want to practice merger models. Am willing to purchase a course and wanted recommendations on any companies you would recommend for the merger model stuff. i.e. BIWS vs Wallstreetprep etc.

Obviously would prefer cheaper/bang for buck. Specifically looking for merger model stuff as the EB does a lot of corporate stuff rather than sponsors.