Evo 1- I didn't need all four Evos. Evo 3 Quite a bit of this library can be accomplished through other means, including the Albion ostinati functions, Session Strings Pro Animator, etc. ad infinitum. It's okay for quick atmospheres, and you can get those cool wavy sounds by dicking around with the dynamics. But overall this was FAR from an essential purpose. On the other hand Evo 2 and 4 can be really inspiring, especially the latter with the woodwinds. You can come up with some seriously useable, angular idea from both of them imo. Met Ark 1...this is more something to get really big really quick (the Viagra of libraries WHEEE!). But I already had EW Symphonic Choirs Platinum, Strezov Storm Choir, Requiem Light, EW Hollywoods (which can be made to sound at least as big with engineering patience), and Iceni. That said, I would have been nuts over this library had I purchased it before anything else. Would be nice to resell. Nothing against the library (it's freaking excellent, people), I simply already have the tools I need for what it does. A waste of tax return (not to mention the time I labored with the manual and videos), it's more a toy than a tool, and I rarely have time to play with it.