I don't have the Alias I, but I do have the II. I think it would depend on what you're looking for in a blade. The II will have a blade size close to the Rookie. I like the Alias II as a more "civilized" or gentlemanly carry option. It rides in the pocket well and probably won't scare most sheeple. I have other +3.5" blades and they are great for bigger jobs, but also make themselves known in your pocket.
Jordan