I still use my original Passport, bought on launch day in 2014. But I'm using it less and less. I bought a OnePlus One in January, 2015, just to play with, and I'm using it 90% of the time now. Even though the OPO was originally released almost two years ago, and mine is over a year old, it works very well. I install CM nightlies, which have been Marshmallow for some months now. They had some rough times in December and January, but since then the experience has been generally positive.
Battery life on the OPO is now better than my best day on the Passport.
But I haven't fully disconnected from BlackBerry, since I'm running the Android Hub, BB Calendar and Contacts, and Device Search on my OPO. My email still says "Sent from my BlackBerry" on it; I haven't had the heart to change it.