Thanks for everyone's help. After doing a bunch more test rides, I decided on the Allez Comp Cr-Mo 56. The 54 felt a little too small. The 58 felt very comfortable, except when I had to stop and wait for the light. It wasn't painful, but it was dangerously close to being painful. Very painful.

This was consistenlty the most comfortable bike in my test rides. I'm looking forward to picking it up next week!!!