If you like the look of the Sirrus, you might really like the look and feel of a Jamis Coda. The Jamis is steel, Sirrus is aluminum. Many folks, myself among them, find aluminum bikes to be uncomfortable and jarring. My Coda is my commuter bike and I really like it.

One thing to consider is whether you want drop bars or flat bars. The Coda (and Sirrus) have flat bars. I would like to have a commuting bike with drop bars, like a Surly. But there are no more bikes in my foreseeable future.