I have Nokia 1600 (Jaago India Jaago) because i like it very much due to talking alarm clock and other lots of stuff.
I have a Motorola V188 with T-Mobile and it works great. The battery lasts for a weekend without a fresh charge.
I have a Siems C56 and I LOVE IT. I actually stopped using my newer motorola to go back to this phone. 1. Small 2. Battery life 3. Call screening !! (selected by phonebook group) Personally I don't need 1,000 apps on my phone or full color display or a screen saver or any of that other crap. This is what I want / need. 1. Phone book that supports groups and group ringers. 2. Batter life. 3. Call screening [e.g. it only rings when someone in the "friends" group calls] 4. Speaker phone. 5. Good reception.