I've been a big fan the Musicmaster for Windows system ever since our company, Rogers Broadcasting, decided to go with it for all our radio stations. We were moving from a competitors DOS based system and had a chance to look at multiple windows systems. MusicMaster has a great history on its ease of support for clients and aggressively improves the product frequently based on our feedback. What I like most about this system is the rule tree. It is so intuitive and flexible in its application. It simply seems limitless in its capabilities and very quick to apply. I love how I can come up with an idea on how to modify a rule and apply it on the fly and see the results within seconds.