Well, enemy interceptor UFOs still tear my Barracudas apart 1 vs 1 so I'd question that "very good" cannon. I can understand lower range, and necessity to use precious zrbite as ammo, but at least increase its DPS to some higher level - like 8-10s reload time, and higher accuracy. Otherwise its not worth using compared to gauss cannon:
1) lower DPS 4,583 vs 5,625
2) only 40% hit chance, which means most of the shots will miss. That wouldn't be that bad, but adding zrbite consumption to consideration makes usage of weapon rather not worth it.
3) it has double the range of the gauss cannon, that's true. However, it still does not outrange UFO interceptors so this merit has little matter.
In general, it seems overnerfed, and as mentioned in previous feedback these UFO interceptors cause balancing issues. Sooner or latter you'd have to ponder about them, and tweak values. I'm very disappointed about performance of the sonic oscillator considering how much tech I had to research to get it, how many rare materials use to manufacture and use one, but tech tree viewer hints something called ion cannon, I do hope that one will prove worth using.
Speaking about own-manufactured sonic weapons, XCOM sonic cannon is absolutely awful having only not much accurate auto mode, and sniper sonic rifle very high TU usage cost. I find it's better to stick with just gauss rifles and have alien sonic cannons loaded into ship as backup weapons.
I'm gonna write a huge feedback once I'll finish the game, meanwhile writing some finding now and then.
