Having not played the VNs, choosing pairings I like is pretty easy because the anime pick a specific route and go with it.
That said, the only pairing I like from Clannad is Tomoya x Nagisa, and I just can’t bring myself to like or even want to think about any other pairing with Tomoya. This ship is so important to me.
For Kanon I like Yuuichi x Ayu and Yuuichi x Shiori. Mai is my favorite girl but I like her to be just friends with Yuuichi.
For Air, the only pairing I ever really thought made sense was Yukito x Misuzu, but no pairing with Yukito ever really made complete sense to me because Yukito seemed so distant from all the girls in the anime.
For Little Busters!, I don’t have an OTP. I was focusing on the friendship of Little Busters! more than anything else.
However, I did ship Riki x Rin since the beginning of the anime, so I was happy they took that direction, even though I didn’t love it as much as I thought I would.
Kyousuke x Komari is definitely great.
For Angel Beats!, I like Hinata x anybody and Otonashi x Kanade. For some reason, I also entertain thoughts of Noda x Shiida because they are both ridiculous in their own ways and I can’t actually see them together at all.
So, I guess I just like the “canon” ships for the most part.