Unless you're fighting caps, never use cerbs unless you can actually aim against other gunboats and know your arcs well. Cerbs are terrible against snubs though.
Solaris are generally the way to go because you're pretty versatile. If you want to play a more supportive role, mount a gunboat missile. If you have access to two different types of gunboat missile turret, then use two gunboat missiles if you want to be even more effective against snubs (though I don't think there's another gunboat missile turret other than the basic one that won't drop your core to 75% on an FL ID). You can also try razors as well.
Basics are only good if you can use/aim then. Your best bet is to chainfire those though.
tl;dr solaris boat is a good bet. If I had to suggest a specific setup, a condor with solaris and a razor mounted on it's top gun (I think that's slot 2) can work well. It has good coverage.