The Braun Series 9 Pro + is being reviewed by various outlets, with some comparing it to other models, such as the Series 9 Pro. Some reviewers have found it to be a worthy upgrade or the best electric shaver they've tried, while others are comparing it to different products, including a beard trimmer. The reviews suggest that the Braun Series 9 Pro + is being evaluated alongside other grooming products to determine its value and performance.