Hey, looks good! I'm glad to see them sorted alphabetically :)
A couple comments: I don't think the entries for "wallet security" and "backups" accurately describe Armory. Wallet Security should say "Encrypt/Offline" or something to to that effect -- after all, offline wallets are the holy grail feature of the Armory. And backups should say something like "One-time Printable" if it fits within the box.
Otherwise, I really like the layout and design. Although despite the fact I enjoy being first on the list, I think Bitcoin-Qt should still go first. It is the "reference" client, and I think it's relevant that it is the "de-facto" client for the majority of users, and the one with the most quality control and stability.
-Alan