Do you plan to feed on demand or on a schedule?

Le
Hello almost new mommy's! I'm looking for some insight, opinions and/or experiences on the feeding subject. 
I have read two very good books about feeding (I plan on breastfeeding, but if this doesn't work out I will switch to formula without any hesitation). The thing is that one book focuses on a strict schedule and the other book is very focused on feeding on demand. Both sounds logical to me and I'm torn about which to choose. Keep going back and forth and my SO doesn't know it either.
So, what are you planning to do and why? Or maybe you already have some experience, I would love to hear. Thank you!