I think the anime was better just because it wasn't too long, but still worked in what made the VN special. But yes, KEY in general is amazing. I wanna play Little Busters, is it good?
I did. I had trouble on Fuuko and Tomoyo's routes though. And it took forever (I started it one summer and finished by the next, due to laziness). But I loved it.
The anime did a better job of tying it all together though.
LuminAbyss is gigantic weaboo for Clannad.