BMOG
Kuusniemi
Choosing a path with orchestral libraries is probably the hardest thing. Most of the top libraries do the same things (in a little different ways though) so you might want to check out screencasts and tutorials on how each of them work. I know I have my favorites, my palette consist mainly of Spitfire Albions, 8Dio strings for details, Strezov Sampling and Vienna Symphonic Library for brass, Sonokinetic Da Capo for woodwind ensembles and again Strezov Sampling for Percussion. But those are the ones that suit my taste of workflow.
Soundwise the top libraries each stand up to each other and fall short of a real orchestra.
Which version of Albion do you have I am trying to determine if 4 is better than 1 or just different? 8Dio sounds good but pricey
I have volumes 1-3. Albion is Spitfire Audio's general label. They contain ensemble collections and each of the Albion has different content. Albion is the basic set, Albion II Loegria contain smaller ensemble, Albion III Iceni contains only low instruments. They compliment each other. Each of the Albions also have a lot of sound design / synth kind of stuff.
The Albion libraries are not really that detailed. They're the kind of libraries you use to give mass and the feel of a large orchestra. I use the 8Dio Agitato strings and Adagietto for more detailed stuff. Especially the Agitato's on top of Albion is good... If I'd gone fully Spitfire then I'd be putting their Mural and Sable libraries on top of Albion (for strings that is). Personally I chose 8Dio Agitato because of the dynamic bowings they have, they're simply fantastic.
This is a thing to consider as well. You mention Orchestral Essential as well and it's another "stripped" package. It's a starter which has only the basics. Albion is basically the same thing, it contains rudimentary elements to writing orchestral music but nothing too detailed.
I'd look carefully at the content of what you're thinking of buying an considering how far can you get with that and what do you want ot write. If it's backing stuff for pop music then a less detailed library will do, as with hydrib scoring a less detailed library carries a long way. But for pure orchestral writing you need articulations, details, velocity layers and round robins. For purely orchestral writing it's still hard to beat Vienna Symphonic Library. They also have their stripped down versions called Special Editions. They're also a great place to start.