The Summit is much more dynamic. It uses powered woofers with 25Hz and 50Hz level controls. This lets you dial in the bass to match the room (or make crazy big bass if you are a bass fiend). The Summit is a lot smaller. THe panel is smaller than the Prodigy too. They take forever to break in but are great afterwards. Is it a trade up to get the Summit? More of a trade sideways. Just a little different sound.
Good luck!
Good luck!