I know what you mean—there's a lot of marketing drivel in PM. Hopefully, this suggestion will help in a few ways (since you're looking for choice, a comparison

I know what you mean—there's a lot of marketing drivel in PM. Hopefully, this suggestion will help in a few ways (since you're looking for choice, a comparison between many frameworks, and maybe even a good option to start). I've had good success in exploring Disciplined Agile. Key to DA is "Choosing your Way of Working" or "WoW". The goal is to take the best from several frameworks (Scrum, XP, Lean, etc.) and allow these features/artifacts to slot into your team's specific needs. Learning DA means you get to learn the basics of lots of different methodologies in the context of prioritizing your work above following the (sometimes arbitrary) rules of a specific framework.