Having to QR-code into a web-app is quite a pain. I wish we didn't tie identities to a phone number like that. Messenger offers even more seamless "handoff" between form-factors, and that's why I find myself preferring it. It's easy for web state to go away, so I find myself having to log back in more often than I'd like. Plus, you can't log in when the phone's out of battery. I really like how snappy Telegram's mobile clients are. I like their stickers (probably the most fun of any chat app these days) and their link preview is quite good. So I'm rooting for them.