I actually tried them all, ranging from megacorps that were darlings of techies and Wall Street to nimble startups with amazing tech. It was politics everywhere, at startups even more nepotistic/cronyistic than in megacorps (e.g. seeing a wife of a cofounder and CEO wasting money on getting selfies with some marketing pseudo-celebrities instead of doing real marketing, and knowing I can't say a word because she basically controlled her husband).