Yeah, I know... weight will always be a big factor, but as it is, it's a relatively light bike, and I've never had lighter, so I won't "know the difference" until some mean, mean person makes me try their feather-light road bike and ruins it for me.

Aero bars, you say? I've already got bar ends... I'll look into the aero bars. I'm not entirely sure I know what you mean, but that's why google, etc exist, right?