I've been using Suitcase 4 and I really like it. My library has 10,000+ fonts and suitcase handles them with ease. I really like the auto activation with all my adobe programs. I even have the ability to use the extrnsis plugin in Photoshop/Illustrator/InDesign to activate fonts from my programs without needing to switch over to suitcase. Overall I'm very happy with Suitcase 4, well worth the $99.