I have a 7 year old phone, and I love it. I'm not that good at using a cell phone, and I have no reason to need to change it. Plus I don't want to have to learn how to operate another phone. My phone is Motorola V551, V547, V555, V540, or V557. I don't know which one it is, they all had the same FCC ID.
Every 2 years I get a new phone, just in case it breaks. My phone doesn't get much use.
The best feature: a removable antenna. Its the perfect size to hit a reset button on a router, or other embedded device.