This is my sources.list:

deb file:///cdrom/ etch main

deb http://mirrors.kernel.org/debian/ testing main contrib non-free
deb-src http://mirrors.kernel.org/debian/ testing main contrib non-free

deb http://security.debian.org/ testing/updates main contrib non-free


which Debian version of The Opera Browser should I get:

 Debian Unstable (Sid)
 Debian 3.1 (Sarge)
 Debian 3.0 (Woody)
 Debian 2.2 (Potato)