Spill the Bostonians.
I'm thinking:
- PlugInGuru - MegaMagic series
- The Unfinished - Colossus I & II
- Luftrum 14 and Ambient 2
- Joseph Hollo - Delight

Midissonance - Symmetry
CL-Projects - Realm of Omnisphere
 

Thanks! Going for Realm of O.

Really depends on your thrust, musically
I am not that enamored with the mega magic series, although they're wonderful, compared to most things on the market. But considering all things Guru, I tend to gravitate much more to Airwave 1 and 2, which are just f'n blowminds, Galactic, Northern Lights, Sabersphere 1/2, Kid 2, and OMG are all very lovely.  Almost ALL the guru's libraries are superior as they add sample content and some serious juju on effects and controllers.  The polifany of contributors to each recent library also ups the quality as each contributor is stellar in their own right.
 
Will have to check out Realm...  The naked demos I'm listening to sound awesome!
 
Collossus is ok.   Tiring of Matt though... pretty simple stuff and no deep innovations.  This maybe a bit harsh as among the zillion patches there are lots of nice things.
 
Luftdrum and Hollo are pretty amazing, given that they do it all with existing samples. They put out just a few but extremely well crafted libraries.
 

Although I have full and enthused endorsement for anything from John at pluginguru.com, since he's amazing, I do have another favorite not mentioned yet.
 
Plughugger.  The guy (or folks) behind it are really talented, and keep coming up with stuff I want to use in my pieces.
 
Here's one clip of introducing one of their many sets:
https://www.youtube.com/watch?v=tfNXorEXVr4
 
I've communicated with one of the folks there (might be the only one I don't know) and he was really nice.
 
Their prices are generally very attractive as well.
 
I get inspired again each time I dabble in their patches for Omnisphere.

Cheers, V-daho, will have to get Northern Lights, as I love Jason Schoepfer's work.
And thanks, lawajava, got the free World of Sin from Plughugger, now looking into more of his spacey stuff.

Here's another one from Plughugger - called Technique:
 
https://www.youtube.com/watch?v=MaRx72QZZrE
 
Consistently good stuff.  World of Sin another winner.
 
Jason's Northern Lights from pluginguru.com is also quite good.

Ya, as John's vid shows, da canadian did well with Northern Lights... lots of cinematics/swirling motion...The ambient basses are georgeous... and get down with "The ORB"... what is it?  Another rarely explored gem within the mighty O
 
V-daho!  Fleer, u da creative genius... can only imagine what ur compositions must be like... actually, I can't! Would love to know...

Only in my head, and they will never leave :)
Edith on topic: Joseph Hollo wins. Such sweet patches.

Anything Pluginguru - Quality!!