While this is a way off (I think the Avail needs a few hundred more miles on her before she gets a sibling!), I want to start pricing things out and getting a feel for what my options may be.

I'd originally wanted to get a 105-equipped bike, then gradually upgrade the parts on the Avail to 105 (at least the derailleurs, cassette, and shifters). Then I wondered what the point of two similar bikes would be. So, new plan: Ultegra. (Added bonus that the boyfriend's head would explode--I'd have a bike on par with his (except for the wheels...)), then upgrade the current bike.

So, my criteria are:
1) More relaxed (Avail-like) geometry. I'm a slow poke. No need to fool myself into thinking otherwise!
2) Ultegra components.
3) Preferably aluminum, though I'd be willing to give carbon a try. (I have a tendency to fall over, hence my uncertainty when it comes to carbon.)

Can anyone suggest anything? Is the aluminum frame even possible to get with that level of componentry?
My Avail fits okay. Not perfectly, but not so that I wouldn't consider buying another Giant.