ProSource of Chicago West Loop 66.50 Rating Score™ Other Of 40 ratings/reviews posted on 4 verified review sites, ProSource of Chicago West Loop has an average rating of 3.65 stars. This earns a Rating Score™ of 66.50. View Profile & Reviews 06/22/2019 Prosource has been a great vendor to me for the last 5 years. Craig and the team there have always taken care of me. From selection to price and delivery they have been excellent.