Happy Samsung Galaxy owner here. Migration from my last Note to current S21 Ultra was completed in less than half an hour, including "settings", contacts, data etc. I had to log in to Fastmail and Telegram with a seamless sync. Using BitWarden to manage passwords. That is worth the premium too! Dropbox syncs my files (and back ups) seamlessly. No sweat. iCloud is pathetic in terms of features (no delta sync) and generally limited storage space.