Been in the cell game for years.
Mitsubishi (analogue) -> Ericsson (analogue) -> Samsung (digital, clamshell) -> BlackBerry 8700 (refurb unlocked) -> Samsung Galaxy SIII.
Some fun comments on each:
Mitsubishi: Great phone for me but everyone else hated it and the store said it was a nightmare. :-)
Ericsson: Worked well. Didn't show "roam" like the Mitsubishi.
Samsung: XTG426 (if I remember correctly) Great phone at the time.
BlackBerry 8700: The thing just worked extremely well except the scroll wheel just got too gnarly to use...
Samsung Galaxy SIII: Very new to me, works very well. Software is the greatest limitation. Virtual keyboard needs a "TAB" key.... :-)
DAB listener 12/2003-11/2011 (DAB Off-Air since 11/2011)
HD radio Listener since 06/2010