Will there be a noticeable difference in feel and performance between a aluminum frame with CF fork and CF stay to a full CF frame?

I currently own a 07 Specialized Allez Elite. It's an aluminium frame with CF fork, CF stay, CF seat post. I'm considering selling the Allez and upgrading to a full CF bike next summer. Will I notice a big difference in performance, weight, and comfort? I planning to spend around $1000 more after selling my Allez for a full CF bike. What do you think?