The information about the Alias sounds like it applies to the old version. It has been completely redesigned for 2008. If you are thinking about this saddle, I would make sure you are getting the 2008 version without the seams & the hard edges.

I have both of these saddles, and there is quite a difference between them in terms of feel. They both look dead flat, but the Ruby seems flatter, the Jett seems to have a little bit of dip to it. The padding on the Jett is all foam, while the Ruby has gel. They are both very firm, but there seems to be more padding to the Jett. The Ruby is completely smooth, so with slick shorts I move around on it more than I do on the Jett. In the mens' equivalents, I believe the Jett is the Alias and the Ruby is the Toupe. The cut-out on both is excellent, there are no sharp edges or seams to irritate and the shape of the hourglass works well for relief. The mens' cut-out is thinner & straight, no hourglass shape. I would not want to ride the mens' versions.

If possible, I would have the shop set up both for you to sit on before you decide. It is a matter of personal preference which one might feel more comfortable. Specialized offers a comfort guarantee on their saddles, so trying one should be relatively low-risk.