I've been lurking on Crackberry for years now and finally decided to join so that I could participate Inn the discussions.
I've used Blackberry since the late 90's when my first device liberated me from the daily on-the-road hotel phone line email login and gave me back about an hour a day.
Recently I've had the 9900, Bold and am currently using a Priv. I'm hoping that BB/TCL will release the rumoured Uni device; a Priv-style slider with a PKB based on the Key2 and the screen real estate of the Priv/Motion.
Unlike some, I don't think BB's USP is just the PKB. I like BlackBerry for their soft keyboard (best on the market IMHO), their security, the simplicity of their Android implementation, the Hub and the general lack of bloatware. A PKB is nice to have but if I can't have a replacement for the Priv then I'll take a Motion2 over a Key2.