Cinematic Guitars has been a staple around here for quite awhile. I've not found as much use for the others. I thought I'd scored the brass ring when I picked up CG for $99 last year. At $79 that's a helluva deal.
BTW, be sure to pick up the TryPack for 5 bucks. It's got odds and ends from AIR, CG, Fanfare, Morphestra, Rumble and a couple others, and is useful all by itself.