 Prostate cancer is the most common cancer in American men. Surgical removal of the entire prostate prostatectomy is one option among the various ways to treat prostate cancer. The use of robot assistance for prostatectomy has become common place, but its effectiveness has not been compared to standard open prostatectomy in trials carried out at more than one medical institution in which participants are identified and followed forward in time. Robot assisted and standard open prostatectomy health related quality of life HRQOL outcomes have not been compared in a prospective, multi-centered study. Prostatectomy can have side effects that can change with time. This research study seeks to determine how common and how long-lasting such side effects are; to find out what features of individual mens cancers and what features of the treatments affect those side effects. This study also seeks to identify factors that affect the quality of prostate cancer care by looking at how satisfied men are with their prostate cancer care. Through these findings, this study aims to allow treatment side effects to be anticipated more accurately for individual patients, and to provide a means for determining the quality of prostate care. 