@RPM I agree with some of what you say, however sincerely disagree on two major points.
Network efficiency ? Are you kidding ? BB is as slow as a mule -and it is getting slower with each passing month. It is fine for BBM, but for anything else it is simply unusable. I would rather pay, and get decent speeds with other networks than suffer the frustrations
Blackberry devices are well engineered ? I think they are plastic crap, using poor materials, poor engineering, poor R and D.
Just my opinions - yes I was a BB user, I bought the top of the line Bold at the time, and gave it to my GF after 3 months, never again...