I've authored book chapters with Springer. I've used their LaTeX class and produced some nice looking chapters (imho). They get "typeset" by SPI in Chennai by

I've authored book chapters with Springer. I've used their LaTeX class and produced some nice looking chapters (imho). They get "typeset" by SPI in Chennai by a non maths speaker, non-native English speaker and come back with errors in both the equations and words and author queries like "equation missing but we follow tex". One professional mathematican I know in a suitably obscure area of number theory has started her own journal to get around it all. I'm in both the physics and medicine camps and have to put up with this bullshit. It's awful.