I can honestly say I dont have much experience at all with password managers on cell devices. I personally have always been oldschool, writing down my passwords and keeping them in a safe place.. I also backup passwords onto USBs for storage. USBs are one of the best managers IMO.
as for Trezor for BTC, i have looked a bit into it and have a couple of friends who went with it.. I heard very positive feedback about it!