2006 - hp iPaq, HTC star trek
2007 - Blackberry 8800, Blackberry Pearl, Blackberry Curve, Pantech Duo, Samsung Blackjack
2008 - iPhone 3g
2009 - Blackberry Storm (second line used to for work; still using iPhone 3g)
2010 - iPhone 4, Blackberry 9700
The only phone on that list that I really liked just as much as I like my iPhone 3g and 4 was the blackjack. I absolutely loved that phone, but definitely didn't regret upgrading to the 3g when the time came. Everything else I used just didn't do what I wanted it to do very well at all. The blackberries have been fine for work, but that's about all I use or care to use them for.