I still use my original 2G, and I'm quite content. I may upgrade when the next version comes out, but I haven't felt the need to do so yet.
And before anyone asks, I use it for everything: phone, address book, safari, iPod, games, productivity apps, music, movies, etc.
And before anyone asks, I use it for everything: phone, address book, safari, iPod, games, productivity apps, music, movies, etc.