An important aspect of any CD storage solution is how it will allow you to organize a large collection.
Typically CDs are organized alphabetically and/or by genre. This requirement pretty much rules out all CD binder solutions, Because binders typically store more than one CD per page and thus will require re-shuffling of the entire collection when a new disc is added. Otherwise you will end up with half full pages and thus wasting a lot of space.
Using sleeves in trays that allow browsing through a CD collection in a "flip-file" style fashion is the most effective way to organize a large collection. Additional CDs can be added right where they belong without re-shuffling. Adding alphabetical or categorical dividers from DiscsSox will allow you to quickly locate any CD. This concept allows really large collections to be organized by genres and alphabetically within genres.