Smartest Non-Smart Phone ?

[dtmpower]

I'm getting sick of never being heard or the call dropping out or the bluetooth connection failing on my Xiaomi. Therefore, for a reasonable budget what's the best VOICE phone.

Call Quality
Battery Life
Bluetooth - rock solid requirement
No camera


This ?

http://www.ebay.co.uk/itm/Ultra-Slim-Mini-OLED-Cel...

or something older from Nokia ?

It will be mainly used in the car on the bluetooth integrated handsfree.