The searching I've done shows that soundjuicer should have a button to edit profiles and allow setting the quality of ogg encoding.

I don't have that button in the version on my system. Is this a bug, or has the application changed?

apt-cache policy sound-juicer
Installed: 3.4.0-3
Candidate: 3.4.0-3
Version table:
*** 3.4.0-3 0
500 quantal/universe amd64 Packages
100 /var/lib/dpkg/status