If you played shuffle, then i recommend giving Clannad a try. Definitely worth your time. Also try Hoshizora no Memoria -Wish upon a Shooting Star. Pretty amazing game.
Welcome, I've yet to try Chaos Head.. It looks OK, but i just can't get myself in the mood to play it, sadly. Just recently finished Clannad again, i recommend that game if you haven't decided to play it already.
I really enjoyed this game. Sure they translation is a little iffy, but it's still easily understandable. I've completed all routes and i enjoyed it almost as shooting star/clannad etc.