I started using the Prosonic Studios libraries a few years ago. I own almost all of the Prosonic Libraries. They have been crucial to developing my personal music production workflow. I am able to save time and money by auditioning the different patterns and voicing variations provided in each set, rather than solely creating just a few of the files on my own from scratch. They have helped me be more creative in expanding my sequencing and composition abilities within Ableton and the other Digital Audio Workstations that I experiment with. I recommend at least trying out one of the Time Signature and Genre sets to see the benefits of purchasing these for yourself!