"DA" == Dave Anderer writes:
DA Anyone have a preference on Concorde vs. Gill?

Yes. I've used both a Gill and Concorde in my Aircoupe and the
Concorde outperforms the Gill. I'll never buy a Gill again, they
don't last.
--
The church tries to save sinners, but science seeks to stop their
manufacture.
~ Elbert Hubbard