[asterisk-users] Best Codec

[Davis Sylvester III]

We are evaluating starting a small VoIP consumer based platform.
What is the best codec to use with customers using primarily DSL as 
internet connectivity?

I know that g729 is the king-all, but I want to know what the rest of 
the professional are using out there.  g729 has a cost involved, so does 
the cost really offset the performance?  Or is it better to go with g711 
to start off?

We plan on using Linksys SPA921 as the primary phone and asterisk open 
source as the softswitch.  Any information you can pass would be 
appreciated.