[Asterisk-Users] least sucky FXO interface?

[Dorn Hetzel]

Would anyone care to offer opinions as to the FXO interface which sucks
the least :)  I have an application in which it appears I must route
certain calls out an analog PSTN line.  Presently, I am testing an 
SPA-3000, but I can't seem to get the echo heard on the IP end of the
call down to a non-annoying level.

Any suggestions welcomed :)

-Dorn