The use of the writ of prohibition also varied with the relationship between the Chancery and the common law judges. While at the beginning of the transformation of the Chancery into a judicial body, the common law judges often cooperated in helping the new court decide cases or even referred plaintiffs who had equitable claims. Over time, however, the relationship declined as plaintiffs chose to seek relief in the Chancery, which was the fourth most popular major court by 1450. In the first half of the fifteenth century, litigants chose to bring their cases there because, despite its growing popularity, the Chancery still saw many fewer cases than the common law court, which allowed cases to be resolved more quickly than in the common law courts, which were known for being slow. Additionally, the Chancery allowed testimony of interested parties and witnesses and could compel discovery and specific relief, which the common law courts could not.