It's from the first digest, not the Secret Invasion one. And I am pretty sure that one also includes the first two links.
I like both of them, but I really like the Secret Invasion one. The older stuff isn't as good in my humble opinion, and the Secret Invasion one doesn't have as much older stuff (though it does have a little - like the strip with Dr.Doom transporting himself into our world to find secrets about the heroes in the Local Comic Shop). I'd recommend both, though. But if I had to pick one of the Digests, I'd go with the SI.