Yes and no. Obviously, people will prefer some brands over others, but it is important to note that brands are just that - the name of the manufacturer. We often get asked for chorizo 'Revilla' by customers who have seen the name and assume that it refers to the type of product. Revilla is the name of just one (large) manufacturer - there are many others. Quality can again depend on brand, but most factories produce two distinct quality grades referred to as 'Extra', the higher quality product made from prime cuts of pork, and 'Primera', the lower quality variety made from 'less than prime' cuts.