I just looked at the specs for the Ruby and the Amira. The geometry that matters as far as handling and fit, i.e. relaxed vs. quick handling seems about the same. The Amira has a 518 top tube length, 450 seat tube length, 405 chain stay, same angles in seat tube and head tube angle 75.5 and 72. the trail and fork angles are the same; so I can't see how one of these bikes would seem relaxed vs aggressive (quick). they both look like they should fit about the same too, except one of them has a stem that is 90 and one has a stem at 100 I think (which can be switched out in most good bike stores dependent on your fit needs); and one I think had shorter cranks which is preference mostly, do you like to spin more or are you more of a masher. At 5'5" you probably don't need the shorter cranks.

The componetry seems pretty comparable, but perhaps the Amira is designed to be a little more on the light weight side - i did not see specs for the weight so i'm not sure