aggie ama - I lied when I said my bike was Ultegra
Take a close look at the STIs - they're 105 as are the brakes.
I was told that the differences between 105 and Ultegra are mainly cosmetic. i.e The Ultegra crank mat be triple plated(more shiny, but the 105 is only double plated)
Sora - I've never ridden Sora. My old bike had RSX, which Sora replaced. it worked fine
Jiffers - I'd love to do the Tuesday Thurday rides, but the fine folks at Unisys and the Los Angeles County Department of Public Social Service have other plan for my time (I don't get off work until 6, and it's in El Monte (10 and Rosemead Blvd)