In fact, I'd say Girl Friends had way more angst than Kisses. I guess it's probably because Kisses is way shorter so they had to be more focused and get to the point faster, unlike Girl Friends that spend way too much time on stupid misunderstandings and both characters angsting about liking girls and thinking other person doesn't like them, before actually hooking up near the end. Yes, I consider Kisses way superior to Girl Friends and it annoys me to no end that it seems like almost nobody read it stare.
Girlfriends and Kisses are the only two manga I have physical copies of because they were the first yuri manga I ever read.
I wish Kisses was more focused on just Nana and Hitomi instead of the other random couples because personally I liked them more than Akko and Mari. Gfs spent so much time with them trying to figure out how to have sex or whatever, kinda weak lol.
And Nana actually had a spine beneath her bottom personality.