We're trying to decide between the following wood burning fireplace insert systems: Jotul Kennebec with solid steel lining for the chimney, and the Quadra-Fire 3100i with flexible steel lining for the chimney. I live in central North Carolina, where the winters are not too cold but still we currently burn a firewood almost daily in the fireplace each winter and would love to use it more efficiently. The tax credit for efficient wood burning stoves is making this way more attractive right now.

I'm also interested on people's opinions on the benefits/drawbacks of the solid vs flexible chimney liners for these efficient stoves. Thanks much.