I have been wearing Cento bibs exclusively for several years now. The cento bibs have the most padding, 10 mm rather than 8, of any Assos model which I prefer. Also the straps on the Cento model are particularly wide and comfortable. The evo are a noticeable improvement over the s7. The front kudu pocket is a lycra type material rather than fabric, the padding is black and the straps even better than the s7, which themselves were excellent wide and comfortable. Note that the sizing is based on height and not weight or waist size. The bibs fit better if not bought larger than recommended, the padding will seat, position better. I'm 5'7 and medium is the recommend size for me and fits me better than large (which I also own). Although the s7 are still being sold and are a bit cheaper, I feel the evo are worth the additional cost. When Assos makes improvements, the improvements address technical issues and are not simply cosmetic marketing.